Continent | Africa |
---|---|
Region | West Africa |
Coordinates | 9°04′55″N8°40′31″E / 9.0820°N 8.6753°E |
Area | Ranked 31st |
• Total | 923,768 km2 (356,669 sq mi) |
• Land | 98.59% |
• Water | 1.41% |
Coastline | 853 km (530 mi) |
Borders | Total land borders: 4,047 km (2,515 mi) Cameroon: 1,690 km (1,050 mi) Niger: 1,497 km (930 mi) Benin: 773 km (480 mi) Chad: 87 km (54 mi) |
Highest point | Chappal Waddi 2,419 m (7,936 ft) |
Lowest point | Atlantic Ocean, 0 m (0 ft) |
Longest river | Niger River, 1,111.88 km (691 mi) |
Largest lake | Kainji Lake 1,243 km2 (480 sq mi) |
Natural resources | petroleum, natural gas, tin, columbite, iron ore, coal, limestone, niobium, lead, zinc, arable land |
Natural hazards | drought, bush fire, landslide |
Environmental issues | air pollution, water pollution, oil spillage, lead exposures, poor waste management, deforestation, desertification, erosion, flooding |
Exclusive economic zone | 217,313 km2 (83,905 sq mi) |
Nigeria is a country in West Africa. It shares land borders with the Republic of Benin to the west, Chad and Cameroon to the east, and Niger to the north. [1] Its coast lies on the Gulf of Guinea in the south and it borders Lake Chad to the northeast. Notable geographical features in Nigeria include the Adamawa Plateau, Mambilla Plateau, Jos Plateau, Obudu Plateau, the Niger River, Benue River, and Niger Delta.
Nigeria is in the tropics, where the climate is very humid and seasonally wet. Nigeria has majorly four climate types; these climate types are generally gradated from south to north. Nigeria's principal streams are the Niger, from which it got its name, and the Benue, the primary tributary of the Niger. The country's most elevated point is Chappal Waddi (or Gangirwal) at 2,419 metres or 7,936 feet, situated in the Adamawa mountains in the Gashaka-Gumti Public Park, Taraba State, on the border with Cameroon. [1]
The capital of Nigeria is Abuja, situated in the centre of the country, while Lagos is the country's major port, monetary center and largest city. Communicated in dialects are English (official), Hausa, Igbo, and Yoruba. [2] It is assessed that Nigeria has around 250 different ethno-etymological gatherings. [3]
The tropical monsoon climate, [4] designated by the Köppen climate classification as Am, is found in the southern part of the country. [5] This climate is influenced by the monsoons originating from the South Atlantic Ocean, which are brought into the country by the (maritime tropical) MT air mass, a warm moist sea-to-land seasonal wind. Its warmth and high humidity gives it a strong tendency to ascend and produce copious rainfall, which is a result of the condensation of water vapour in the rapidly rising air. [6] The tropical monsoon climate has a very small temperature range. The temperature ranges are almost constant throughout the year; for example, Warri in the southern part of Nigeria records a maximum of 28 °C (82.4 °F) for its hottest month while its lowest temperature is 26 °C (78.8 °F) in its coldest month. [7]
The southern part of Nigeria experiences heavy and abundant rainfall. These storms are usually convectional in nature because of the region's proximity to the equatorial belt. The annual rainfall received in this region is very high. Parts of the Niger Delta receives over 4,000 millimetres or 160 inches of annual rainfall, while the southeast receives between 2,000 and 3,000 millimetres (80 and 120 in). The southern region of Nigeria experiences a double rainfall maxima with two high peaks. The first rainy season starts in March, ending in June. The August break, a short dry season, follows, followed by a short rainy season in September and a long dry season in October. [8]
The tropical savanna climate, characterized by distinct rainy and dry seasons, dominates western to central Nigeria. It has a single peak in the summer and consistently high temperatures above 18 °C or 64.4 °F. Abuja, Nigeria's capital, experiences a temperature range of 18.45 to 36.9 °C (65.2 to 98.4 °F). [9] The dry season occurs from December to March and is hot and dry with the Harmattan wind, a continental tropical (CT) air mass laden with dust from the Sahara, prevailing throughout this period.
With the Intertropical Convergence Zone swinging northward over West Africa from the Southern Hemisphere in April, heavy showers coming from pre-monsoonal convective clouds mainly in the form of squall lines also known as the north easterlies formed mainly as a result of the interactions of the two dominant airmasses in Nigeria known as the maritime tropical (south westerlies) and the continental tropical (north easterlies), [10] begins in central Nigeria while monsoons arrive in July, bringing with it high humidity, heavy cloud cover and heavy rainfall lasting until September when the monsoons gradually begin retreating southward to the southern part of Nigeria. Rainfall totals in central Nigeria varies from 1,100 mm (43.3 in) in the lowlands to over 2,000 mm (78.7 in) along the south western escarpment of the Jos Plateau. [11]
A hot semi-arid climate (BSh) is predominant within the Sahel in the northern part of Nigeria. Annual rainfall totals are low. The rainy season in the northern part of Nigeria lasts for three to four months (June to September). The rest of the year is hot and dry with temperatures climbing as high as 40 °C (104.0 °F) . Potiskum, Yobe State in the northeast of Nigeria recorded Nigeria's lowest ever temperature of 2.8 °C (37.0 °F).
Highland climates are found on highlands regions in Nigeria. Highlands over 1,520 metres (4,987 ft) above sea level are cool enough to reach the temperate climate line in the tropics thereby giving the highlands, mountains and the plateau regions standing above this height, a cool mountain climate.
Rainfall in the coastal belt of the Niger Delta is heavy due to the closeness of the Delta region to the equator. Annual rainfall totals vary from 2,400 millimetres or 94 inches at Port Harcourt to as much as 4,870 millimetres or 192 inches at Forcados, a coastal town in the Niger Delta, 4,200 millimetres or 165 inches at Bonny, and 3,070 millimetres or 121 inches in Calabar, the rainiest city with over one million people in Nigeria. As one moves northward and eastward, annual rainfall declines steadily to around 650 millimetres or 26 inches at Sokoto in the northwest and as low as 400 millimetres or 16 inches in the extreme north of Yobe and Borno States, which under the sweltering conditions that prevail is dry enough to be a hot arid climate (Köppen BWh).
The tropical maritime air mass (MT) is responsible for Nigeria's rainy season. [12] This wind begins in February in the southern part of Nigeria while it takes longer for the wind to fully cover the whole of the country, reaching the northern part of Nigeria in June. Its presence a result of the northward retreat of the Harmattan. The northward retreat of the tropical continental air mass (CT) is caused by the sun's northward shift from the tropic of capricorn in the southern hemisphere to the tropic of cancer in the northern hemisphere. This shift begins from February and ends in June, when the sun is fully overhead at the tropic of cancer. During this northward migration of the sun as a result of the earth tilting along its axis, the sun crosses the equator (around March), moving over West Africa. West Africa comes directly under the sun at this time. The whole of West Africa is heated intensely as result of the increased insolation. Temperatures can climb as high as 35 °C (95.0 °F) over West Africa during this time. Temperatures in the northern part of Nigeria can go as high as 48 °C (118.4 °F) in cities like Maiduguri. [13]
High temperatures and increased insolation cause low pressure in West Africa and Nigeria between March and May. The Saharan continental air mass weakens due to land surface overheating, causing the atmosphere to expand and become lighter. The air mass retreats, and the sun's rays enter Nigeria's atmosphere more intensely than during Harmattan. [14] The heating of the West Africa land mass creates a low pressure region over West Africa. This low pressure zone aid in the development of the tropical maritime air mass from the south Atlantic.
The tropical maritime air mass is a warm, humid and unstable trade wind. [15] Convection currents form within the airmass whenever there is little instability in the airmass as a result of a slight to a very high orographic uplift in mountainous regions like the Obudu Plateau or the heating of the land which can trigger the formation of cumulonimbus cloud leading to thunderstorms within the air mass. During the dominance of the tropical maritime air mass, mornings are bright and sunny, the sun's heating of the land in the mornings and afternoons sets up convectional currents, these currents rise vertically, cumulonimbus clouds are formed, and torrential downpours can occur in the afternoon.
The African easterly wave is another major contributor of rainfall during the summer monsoons months of May to September. The nature of this wave changes at about 15 degrees north latitude. The waves that pass south of this latitude carry moisture and create convection that leads to rain clouds. [16] [17] Nigeria's location in the wetter part of the easterly waves south of the 15 degrees north latitude creates wetter climatic conditions for Nigeria, especially during the monsoons.
The tropical continental air mass, locally known as the Harmattan, [18] is a wind originating from North Africa which crosses the Sahara into West Africa. Nigeria's dry season from December to March is dominated by a dusty tropical continental air mass, which creates a haze and hinders visibility. Originating near the equator, it generates dust rather than precipitation. Despite its impact on transportation, the low humidity helps farmers dry their crops. [19]
Nigeria's seasons and temperature variance are determined by rainfall with rainy season and dry season being the major seasons in Nigeria. The rainy season of Nigeria brings in cooler weather to the country as a result of an increased cloud cover that acts as a blockage of the intense sunshine of the tropics by blocking much of the Suns rays in the rainy season; this in turn cools the land, and the winds above the ground remain cool thereby making for cooler temperatures during the rainy season. But afternoons in the rainy season can be hot and humid. In the rainy season it is damp, and the rainfalls are usually abundant.
The dry season of Nigeria is a period of little cloud cover in the southern part of Nigeria to virtually no cloud cover in the northern part of Nigeria. The Sun shines through the atmosphere with little obstructions from the clear skies making the dry season in Nigeria a period of warm weather conditions. In the middle of the dry season around December, the dust brought in by the Harmattan partially blocks the sun's rays, which lowers temperatures. But with the withdrawal of this wind around March to April following the onset of the rainy season, temperatures can go as high as 44 °C (111.2 °F) in some parts of Nigeria. [20]
Semi-temperate weather conditions prevail on the highlands in central Nigeria above 1,200 metres (3,937 ft) above sea level, namely the Jos Plateau. Temperatures on the Jos plateau ranges between 16 and 25 °C (61 and 77 °F) which are cool all year round. Temperate weather conditions occur on the highlands along the Nigeria Cameroon border, in the eastern part of Nigeria. Highlands in these region attain an average height of more than 1,524 m (5,000 ft) to some standing above 2,000 metres (6,562 ft) above sea level. The climate on these highlands is temperate all year round. The major highlands in this region are the Obudu Plateau above 1,584 m (5,197 ft), Mambilla Plateau above 1,524 m (5,000 ft) and Mt. Chappal Waddi above 2,000 m (6,562 ft).
Climate data for Lagos (Murtala Muhammed International Airport) 1961–1990, extremes: 1886–present | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 40.0 (104.0) | 37.1 (98.8) | 37.0 (98.6) | 39.6 (103.3) | 37.0 (98.6) | 37.6 (99.7) | 33.2 (91.8) | 33.0 (91.4) | 33.2 (91.8) | 33.7 (92.7) | 39.9 (103.8) | 36.4 (97.5) | 40.0 (104.0) |
Mean daily maximum °C (°F) | 32.2 (90.0) | 33.2 (91.8) | 32.9 (91.2) | 32.2 (90.0) | 30.9 (87.6) | 29.3 (84.7) | 28.2 (82.8) | 28.3 (82.9) | 28.9 (84.0) | 30.3 (86.5) | 31.4 (88.5) | 31.8 (89.2) | 30.8 (87.4) |
Daily mean °C (°F) | 27.3 (81.1) | 28.4 (83.1) | 28.5 (83.3) | 28.0 (82.4) | 27.0 (80.6) | 25.6 (78.1) | 25.2 (77.4) | 25.0 (77.0) | 25.5 (77.9) | 26.4 (79.5) | 27.2 (81.0) | 27.2 (81.0) | 26.8 (80.2) |
Mean daily minimum °C (°F) | 22.4 (72.3) | 23.7 (74.7) | 24.1 (75.4) | 23.7 (74.7) | 23.2 (73.8) | 21.9 (71.4) | 22.3 (72.1) | 21.8 (71.2) | 22.1 (71.8) | 22.4 (72.3) | 23.0 (73.4) | 22.5 (72.5) | 22.8 (73.0) |
Record low °C (°F) | 12.6 (54.7) | 16.1 (61.0) | 14.0 (57.2) | 14.9 (58.8) | 20.0 (68.0) | 21.2 (70.2) | 15.0 (59.0) | 19.0 (66.2) | 13.0 (55.4) | 17.9 (64.2) | 11.1 (52.0) | 11.6 (52.9) | 11.1 (52.0) |
Average precipitation mm (inches) | 13.2 (0.52) | 40.6 (1.60) | 84.3 (3.32) | 146.3 (5.76) | 202.4 (7.97) | 315.5 (12.42) | 243.0 (9.57) | 121.7 (4.79) | 160.0 (6.30) | 125.1 (4.93) | 39.7 (1.56) | 14.8 (0.58) | 1,506.6 (59.31) |
Average precipitation days (≥ 1.0 mm) | 1.5 | 2.8 | 6.6 | 9.0 | 12.5 | 16.2 | 13.2 | 11.6 | 12.7 | 11.2 | 4.9 | 2.1 | 104.3 |
Average relative humidity (%) | 81 | 79 | 76 | 82 | 84 | 87 | 87 | 85 | 86 | 87 | 84 | 82 | 83 |
Average dew point °C (°F) | 21 (70) | 24 (75) | 25 (77) | 25 (77) | 24 (75) | 24 (75) | 23 (73) | 23 (73) | 24 (75) | 24 (75) | 24 (75) | 23 (73) | 24 (74) |
Mean monthly sunshine hours | 164.3 | 168.0 | 173.6 | 180.0 | 176.7 | 114.0 | 99.2 | 108.5 | 114.0 | 167.4 | 186.0 | 192.2 | 1,843.9 |
Mean daily sunshine hours | 5.3 | 6.1 | 5.6 | 6.0 | 5.7 | 3.8 | 3.2 | 3.5 | 3.8 | 5.4 | 6.2 | 6.2 | 5.1 |
Source 1: Deutscher Wetterdienst (humidity, 1952–1967), [21] NOAA (monthly sun hours) [22] | |||||||||||||
Source 2: Meteo Climat (record highs and lows) [23] Time and Date (dewpoints, 2005-2015) [24] Weather Atlas (daily sun hours) [25] |
Climate data for Port Harcourt (1961-1990 normals) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °C (°F) | 32.4 (90.3) | 33.4 (92.1) | 32.6 (90.7) | 32.1 (89.8) | 31.2 (88.2) | 30.0 (86.0) | 28.8 (83.8) | 28.7 (83.7) | 29.3 (84.7) | 30.2 (86.4) | 31.3 (88.3) | 31.8 (89.2) | 31.0 (87.8) |
Mean daily minimum °C (°F) | 21.2 (70.2) | 22.5 (72.5) | 23.3 (73.9) | 23.2 (73.8) | 23.2 (73.8) | 22.7 (72.9) | 22.4 (72.3) | 22.4 (72.3) | 22.4 (72.3) | 22.4 (72.3) | 22.4 (72.3) | 21.4 (70.5) | 22.5 (72.5) |
Average rainfall mm (inches) | 22.2 (0.87) | 56.5 (2.22) | 116.3 (4.58) | 183.6 (7.23) | 222.7 (8.77) | 273.3 (10.76) | 356.5 (14.04) | 326.8 (12.87) | 367.1 (14.45) | 263.1 (10.36) | 96.9 (3.81) | 25.9 (1.02) | 2,310.9 (90.98) |
Average rainy days | 2.2 | 4.6 | 8.6 | 11.6 | 14.2 | 16.5 | 19.7 | 19.8 | 20.1 | 14.4 | 5.9 | 2.1 | 139.7 |
Average relative humidity (%) (at 15:00 LST) | 54.6 | 57.0 | 65.3 | 70.1 | 74.1 | 78.5 | 81.1 | 81.6 | 81.3 | 77.7 | 69.3 | 58.5 | 70.8 |
Mean monthly sunshine hours | 142.6 | 123.2 | 114.7 | 132.0 | 139.5 | 102.0 | 77.5 | 74.4 | 78.0 | 102.3 | 132.0 | 148.8 | 1,367 |
Mean daily sunshine hours | 4.6 | 4.4 | 3.7 | 4.4 | 4.5 | 3.4 | 2.5 | 2.4 | 2.6 | 3.3 | 4.4 | 4.8 | 3.7 |
Source 1: World Meteorological Organization [26] | |||||||||||||
Source 2: NOAA (sun and relative humidity, 1961–1990) [27] |
Climate data for Abuja | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 36.0 (96.8) | 38.4 (101.1) | 39.7 (103.5) | 39.0 (102.2) | 39.3 (102.7) | 34.0 (93.2) | 32.0 (89.6) | 31.2 (88.2) | 31.0 (87.8) | 35.0 (95.0) | 37.9 (100.2) | 37.6 (99.7) | 39.7 (103.5) |
Mean daily maximum °C (°F) | 33.7 (92.7) | 37.1 (98.8) | 37.0 (98.6) | 34.9 (94.8) | 33.7 (92.7) | 30.4 (86.7) | 28.9 (84.0) | 28.4 (83.1) | 29.3 (84.7) | 30.1 (86.2) | 34.7 (94.5) | 34.8 (94.6) | 32.8 (91.0) |
Daily mean °C (°F) | 26.1 (79.0) | 28.7 (83.7) | 30.5 (86.9) | 28.9 (84.0) | 28.6 (83.5) | 26.9 (80.4) | 25.9 (78.6) | 24.8 (76.6) | 25.4 (77.7) | 27.0 (80.6) | 28.0 (82.4) | 27.6 (81.7) | 27.4 (81.3) |
Mean daily minimum °C (°F) | 19.2 (66.6) | 22.2 (72.0) | 25.4 (77.7) | 24.5 (76.1) | 24.4 (75.9) | 23.4 (74.1) | 23.1 (73.6) | 22.4 (72.3) | 22.7 (72.9) | 23.6 (74.5) | 21.1 (70.0) | 20.8 (69.4) | 22.7 (72.9) |
Record low °C (°F) | 15.0 (59.0) | 18.6 (65.5) | 20.0 (68.0) | 21.7 (71.1) | 21.6 (70.9) | 20.8 (69.4) | 20.3 (68.5) | 20.0 (68.0) | 20.0 (68.0) | 21.6 (70.9) | 17.0 (62.6) | 17.0 (62.6) | 15.0 (59.0) |
Average rainfall mm (inches) | 3 (0.1) | 7 (0.3) | 16 (0.6) | 73 (2.9) | 137 (5.4) | 187 (7.4) | 216 (8.5) | 272 (10.7) | 233 (9.2) | 117 (4.6) | 7 (0.3) | 2 (0.1) | 1,270 (50.1) |
Average rainy days | 0.1 | 0.2 | 1.3 | 3.2 | 9.4 | 10.3 | 13.0 | 17.2 | 15.9 | 8.0 | 0.3 | 0.1 | 79 |
Source: Deutscher Wetterdienst. [28] |
Climate data for Benin City | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 34.4 (93.9) | 36.1 (97.0) | 36.1 (97.0) | 35.6 (96.1) | 35.0 (95.0) | 33.3 (91.9) | 31.7 (89.1) | 31.1 (88.0) | 32.8 (91.0) | 32.8 (91.0) | 34.4 (93.9) | 34.4 (93.9) | 36.1 (97.0) |
Mean daily maximum °C (°F) | 31.9 (89.4) | 33.3 (91.9) | 33.0 (91.4) | 32.4 (90.3) | 31.6 (88.9) | 29.9 (85.8) | 27.9 (82.2) | 27.9 (82.2) | 28.8 (83.8) | 30.3 (86.5) | 31.8 (89.2) | 32.0 (89.6) | 30.9 (87.6) |
Daily mean °C (°F) | 25.8 (78.4) | 26.7 (80.1) | 26.7 (80.1) | 26.4 (79.5) | 25.9 (78.6) | 24.9 (76.8) | 23.8 (74.8) | 23.7 (74.7) | 24.3 (75.7) | 25.0 (77.0) | 25.9 (78.6) | 25.7 (78.3) | 25.4 (77.7) |
Mean daily minimum °C (°F) | 21.4 (70.5) | 22.1 (71.8) | 22.6 (72.7) | 22.6 (72.7) | 22.6 (72.7) | 21.9 (71.4) | 21.6 (70.9) | 21.2 (70.2) | 21.8 (71.2) | 21.8 (71.2) | 22.1 (71.8) | 21.2 (70.2) | 21.9 (71.4) |
Record low °C (°F) | 12.8 (55.0) | 13.3 (55.9) | 18.3 (64.9) | 19.4 (66.9) | 19.4 (66.9) | 18.3 (64.9) | 16.7 (62.1) | 16.1 (61.0) | 18.9 (66.0) | 18.9 (66.0) | 15.6 (60.1) | 14.4 (57.9) | 12.8 (55.0) |
Average rainfall mm (inches) | 18 (0.7) | 33 (1.3) | 97 (3.8) | 168 (6.6) | 213 (8.4) | 302 (11.9) | 320 (12.6) | 211 (8.3) | 318 (12.5) | 241 (9.5) | 76 (3.0) | 15 (0.6) | 2,012 (79.2) |
Average rainy days (≥ 0.3 mm) | 2 | 4 | 9 | 12 | 16 | 20 | 23 | 19 | 25 | 21 | 7 | 2 | 160 |
Average relative humidity (%) | 84 | 81 | 84 | 85 | 87 | 90 | 93 | 92 | 91 | 89 | 86 | 84 | 87 |
Mean monthly sunshine hours | 179.8 | 178.0 | 173.6 | 177.0 | 176.7 | 144.0 | 99.2 | 89.9 | 81.0 | 148.8 | 192.0 | 213.9 | 1,853.9 |
Mean daily sunshine hours | 5.8 | 6.3 | 5.6 | 5.9 | 5.7 | 4.8 | 3.2 | 2.9 | 2.7 | 4.8 | 6.4 | 6.9 | 5.1 |
Source: Deutscher Wetterdienst [29] |
Climate data for Kano (1981-2010) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °C (°F) | 29.0 (84.2) | 32.4 (90.3) | 36.4 (97.5) | 39.1 (102.4) | 37.1 (98.8) | 35.4 (95.7) | 32.0 (89.6) | 30.9 (87.6) | 32.3 (90.1) | 34.5 (94.1) | 33.1 (91.6) | 29.9 (85.8) | 33.5 (92.3) |
Mean daily minimum °C (°F) | 13.7 (56.7) | 16.2 (61.2) | 20.4 (68.7) | 24.5 (76.1) | 25.0 (77.0) | 23.7 (74.7) | 22.1 (71.8) | 21.2 (70.2) | 21.9 (71.4) | 21.2 (70.2) | 17.1 (62.8) | 14.2 (57.6) | 20.1 (68.2) |
Average rainfall mm (inches) | 0.0 (0.0) | 0.7 (0.03) | 1.9 (0.07) | 8.1 (0.32) | 71.3 (2.81) | 118.7 (4.67) | 209.0 (8.23) | 311.2 (12.25) | 137.0 (5.39) | 14.1 (0.56) | 1.0 (0.04) | 0.0 (0.0) | 873 (34.37) |
Average rainy days | 0 | 0 | 1 | 2 | 8 | 11 | 17 | 21 | 14 | 2 | 1 | 0 | 72 |
Average relative humidity (%) (at 15:00 LST) | 17.0 | 13.2 | 13.2 | 19.1 | 29.5 | 44.5 | 58.9 | 63.6 | 55.0 | 30.1 | 18.1 | 17.4 | 31.6 |
Mean monthly sunshine hours | 244.9 | 232.4 | 238.7 | 234.0 | 263.5 | 261.0 | 229.4 | 220.1 | 240.0 | 266.6 | 264.0 | 260.4 | 2,955 |
Mean daily sunshine hours | 7.9 | 8.3 | 7.7 | 7.8 | 8.5 | 8.7 | 7.4 | 7.1 | 8.0 | 8.6 | 8.8 | 8.4 | 8.1 |
Source 1: World Meteorological Organization [30] & Danish Meteorological Institute (rainfall & rain days) [31] | |||||||||||||
Source 2: NOAA (sun and relative humidity, 1961–1990) [32] |
Climate data for Maiduguri (1961-1990 normals) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 40 (104) | 42 (108) | 44 (111) | 46 (115) | 47 (117) | 42 (108) | 43 (109) | 36 (97) | 38 (100) | 39 (102) | 39 (102) | 38 (100) | 47 (117) |
Mean daily maximum °C (°F) | 31.9 (89.4) | 34.6 (94.3) | 37.8 (100.0) | 40.1 (104.2) | 39.4 (102.9) | 36.4 (97.5) | 33.2 (91.8) | 32.0 (89.6) | 33.7 (92.7) | 36.4 (97.5) | 34.2 (93.6) | 32.3 (90.1) | 35.2 (95.4) |
Daily mean °C (°F) | 21.8 (71.2) | 24.8 (76.6) | 29.3 (84.7) | 32.6 (90.7) | 32.5 (90.5) | 30.2 (86.4) | 27.5 (81.5) | 26.6 (79.9) | 27.2 (81.0) | 27.9 (82.2) | 24.9 (76.8) | 23.2 (73.8) | 27.4 (81.3) |
Mean daily minimum °C (°F) | 12.6 (54.7) | 15.3 (59.5) | 19.7 (67.5) | 21.9 (71.4) | 25.5 (77.9) | 24.5 (76.1) | 22.9 (73.2) | 22.3 (72.1) | 22.4 (72.3) | 20.7 (69.3) | 16.0 (60.8) | 13.1 (55.6) | 19.9 (67.8) |
Record low °C (°F) | 8 (46) | 10 (50) | 15 (59) | 12 (54) | 18 (64) | 19 (66) | 20 (68) | 19 (66) | 20 (68) | 15 (59) | 10 (50) | 5 (41) | 5 (41) |
Average precipitation mm (inches) | 0.0 (0.0) | 0.0 (0.0) | 0.3 (0.01) | 13.0 (0.51) | 30.5 (1.20) | 73.8 (2.91) | 147.1 (5.79) | 193.2 (7.61) | 83.0 (3.27) | 11.1 (0.44) | 0.0 (0.0) | 0.1 (0.00) | 552.1 (21.74) |
Average precipitation days (≥ 1.0 mm) | 0.0 | 0.0 | 0.5 | 1.6 | 4.0 | 7.0 | 10.7 | 10.7 | 6.8 | 1.4 | 0.0 | 0.0 | 42.7 |
Average relative humidity (%) (at 15:00 LST) | 15.4 | 11.2 | 12.0 | 17.5 | 28.4 | 38.4 | 55.5 | 63.4 | 54.8 | 30.2 | 19.0 | 19.6 | 30.2 |
Mean monthly sunshine hours | 266.6 | 249.2 | 257.3 | 237.0 | 263.5 | 249.0 | 217.0 | 204.6 | 225.0 | 285.2 | 282.0 | 275.9 | 3,012.3 |
Mean daily sunshine hours | 8.6 | 8.9 | 8.3 | 7.9 | 8.5 | 8.3 | 7.0 | 6.6 | 7.5 | 9.2 | 9.4 | 8.9 | 8.3 |
Source 1: NOAA, [33] Climate Charts (latitude: 11°51'N; longitude: 013°05'E; elevation: 354m, 1161') [34] | |||||||||||||
Source 2: Voodoo Skies for record temperatures [35] |
Climate data for Ibadan | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °C (°F) | 37.2 (99.0) | 38.9 (102.0) | 38.3 (100.9) | 37.2 (99.0) | 35.0 (95.0) | 33.3 (91.9) | 31.7 (89.1) | 31.7 (89.1) | 35.6 (96.1) | 33.3 (91.9) | 33.9 (93.0) | 35.6 (96.1) | 38.9 (102.0) |
Mean daily maximum °C (°F) | 32.3 (90.1) | 34.0 (93.2) | 33.5 (92.3) | 32.3 (90.1) | 31.2 (88.2) | 29.6 (85.3) | 27.8 (82.0) | 27.2 (81.0) | 28.5 (83.3) | 29.7 (85.5) | 31.3 (88.3) | 31.9 (89.4) | 30.8 (87.4) |
Daily mean °C (°F) | 25.7 (78.3) | 26.9 (80.4) | 26.9 (80.4) | 26.3 (79.3) | 25.6 (78.1) | 25.1 (77.2) | 23.6 (74.5) | 23.1 (73.6) | 23.9 (75.0) | 24.3 (75.7) | 25.6 (78.1) | 25.5 (77.9) | 25.2 (77.4) |
Mean daily minimum °C (°F) | 20.9 (69.6) | 21.9 (71.4) | 22.5 (72.5) | 22.0 (71.6) | 21.7 (71.1) | 21.6 (70.9) | 21.2 (70.2) | 20.7 (69.3) | 21.8 (71.2) | 21.7 (71.1) | 21.6 (70.9) | 20.7 (69.3) | 21.5 (70.7) |
Record low °C (°F) | 10.0 (50.0) | 11.1 (52.0) | 15.0 (59.0) | 18.3 (64.9) | 17.8 (64.0) | 17.8 (64.0) | 16.1 (61.0) | 15.6 (60.1) | 17.2 (63.0) | 17.8 (64.0) | 15.6 (60.1) | 11.1 (52.0) | 10.0 (50.0) |
Average rainfall mm (inches) | 10 (0.4) | 25 (1.0) | 91 (3.6) | 135 (5.3) | 152 (6.0) | 188 (7.4) | 155 (6.1) | 86 (3.4) | 175 (6.9) | 160 (6.3) | 46 (1.8) | 10 (0.4) | 1,233 (48.5) |
Average rainy days (≥ 0.3 mm) | 1 | 3 | 7 | 9 | 14 | 17 | 15 | 13 | 18 | 18 | 7 | 1 | 123 |
Average relative humidity (%) | 76 | 73 | 77 | 82 | 85 | 87 | 89 | 88 | 88 | 87 | 83 | 79 | 83 |
Mean monthly sunshine hours | 198.4 | 197.8 | 186.0 | 180.0 | 195.3 | 147.0 | 86.8 | 65.1 | 93.0 | 164.3 | 207.0 | 220.1 | 1,940.8 |
Mean daily sunshine hours | 6.4 | 7.0 | 6.0 | 6.0 | 6.3 | 4.9 | 2.8 | 2.1 | 3.1 | 5.3 | 6.9 | 7.1 | 5.3 |
Source: Deutscher Wetterdienst [36] |
Climate data for Jos (1961–1990 normals) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °C (°F) | 27.3 (81.1) | 28.7 (83.7) | 30.4 (86.7) | 30.2 (86.4) | 28.2 (82.8) | 26.6 (79.9) | 24.4 (75.9) | 24.3 (75.7) | 26.1 (79.0) | 27.8 (82.0) | 28.0 (82.4) | 27.2 (81.0) | 27.4 (81.3) |
Daily mean °C (°F) | 21.3 (70.3) | 22.9 (73.2) | 24.9 (76.8) | 25.7 (78.3) | 24.5 (76.1) | 22.7 (72.9) | 21.4 (70.5) | 20.9 (69.6) | 21.9 (71.4) | 22.9 (73.2) | 22.7 (72.9) | 21.5 (70.7) | 22.8 (73.0) |
Mean daily minimum °C (°F) | 12.7 (54.9) | 15.1 (59.2) | 17.7 (63.9) | 18.3 (64.9) | 18.0 (64.4) | 17.2 (63.0) | 16.7 (62.1) | 16.5 (61.7) | 16.7 (62.1) | 16.3 (61.3) | 14.4 (57.9) | 13.1 (55.6) | 16.1 (61.0) |
Average precipitation mm (inches) | 0.4 (0.02) | 2.8 (0.11) | 29.8 (1.17) | 92.9 (3.66) | 159.8 (6.29) | 198.5 (7.81) | 303.8 (11.96) | 290.1 (11.42) | 197.6 (7.78) | 38.3 (1.51) | 0.3 (0.01) | 0.5 (0.02) | 1,314.8 (51.76) |
Average precipitation days (≥ 0.1 mm) | 0.1 | 0.2 | 1.4 | 6.9 | 11.6 | 15.6 | 20.6 | 19.9 | 16.2 | 4.0 | 0.1 | 0.1 | 96.7 |
Average relative humidity (%) | 14.1 | 13.6 | 19.6 | 38.7 | 58.3 | 66.0 | 75.8 | 76.2 | 64.2 | 42.0 | 20.8 | 16.5 | 42.1 |
Mean monthly sunshine hours | 282.1 | 254.8 | 238.7 | 204.0 | 204.6 | 198.0 | 158.1 | 139.5 | 177.0 | 238.7 | 285.0 | 288.3 | 2,668.8 |
Mean daily sunshine hours | 9.1 | 9.1 | 7.7 | 6.8 | 6.6 | 6.6 | 5.1 | 4.5 | 5.9 | 7.7 | 9.5 | 9.3 | 7.3 |
Source 1: NOAA [37] | |||||||||||||
Source 2: Climate-Data.orgJos (altitude: 1185m, mean temperatures) [38] |
Climate data for Sokoto (1981–2010) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °C (°F) | 32.1 (89.8) | 34.8 (94.6) | 38.6 (101.5) | 40.6 (105.1) | 39.0 (102.2) | 36.2 (97.2) | 32.8 (91.0) | 31.3 (88.3) | 32.8 (91.0) | 36.0 (96.8) | 36.1 (97.0) | 32.9 (91.2) | 35.3 (95.5) |
Daily mean °C (°F) | 24.5 (76.1) | 27.1 (80.8) | 31.2 (88.2) | 33.7 (92.7) | 33.1 (91.6) | 30.9 (87.6) | 28.2 (82.8) | 27.2 (81.0) | 28.0 (82.4) | 29.7 (85.5) | 28.3 (82.9) | 25.3 (77.5) | 28.9 (84.1) |
Mean daily minimum °C (°F) | 16.9 (62.4) | 19.4 (66.9) | 23.8 (74.8) | 26.9 (80.4) | 27.3 (81.1) | 25.6 (78.1) | 23.6 (74.5) | 23.1 (73.6) | 23.2 (73.8) | 23.4 (74.1) | 20.5 (68.9) | 17.7 (63.9) | 22.6 (72.7) |
Average rainfall mm (inches) | 0.0 (0.0) | 0.1 (0.00) | 1.5 (0.06) | 4.8 (0.19) | 46.5 (1.83) | 80.0 (3.15) | 186.6 (7.35) | 200.5 (7.89) | 109.8 (4.32) | 17.2 (0.68) | 0.0 (0.0) | 0.0 (0.0) | 647 (25.47) |
Average rainy days (≥ 0.2 mm) | 0 | 0 | 0 | 1 | 4 | 7 | 11 | 14 | 8 | 2 | 0 | 0 | 47 |
Average relative humidity (%) | 24 | 19 | 21 | 34 | 50 | 62 | 76 | 83 | 80 | 64 | 36 | 27 | 48 |
Mean monthly sunshine hours | 288.3 | 268.4 | 275.9 | 255.0 | 272.8 | 279.0 | 229.4 | 186.0 | 237.0 | 303.8 | 300.0 | 300.7 | 3,196.3 |
Mean daily sunshine hours | 9.3 | 9.5 | 8.9 | 8.5 | 8.8 | 9.3 | 7.4 | 6.0 | 7.9 | 9.8 | 10.0 | 9.7 | 8.8 |
Source 1: World Meteorological Organization [39] | |||||||||||||
Source 2: Deutscher Wetterdienst (humidity, 1951–1965 and sun, 1952–1961) [40] |
Nigeria's most expansive topographical region is that of the Niger and Benue River valleys, which merge into each other and form a "y" shaped confluence at Lokoja. [41] Plains rise to the north of the valleys. To the southwest of the Niger there is "rugged" highland, and to the southeast of the Benue hills and mountains are found all the way to the border with Cameroon. Coastal plains are found in both the southwest and the southeast.
The Niger Delta is located in the southern part of Nigeria. It is one of the world's largest arcuate fan-shaped river deltas. The riverine area of the Niger Delta is a coastal belt of swamps bordering the Atlantic. The mangrove swamps are vegetated tidal flats formed by a reticulate pattern of interconnected meandering creeks and tributaries of the Niger River. About 70% of Nigeria's crude oil and gas production is from the area. A recent global remote sensing analysis suggested that there were 1,244 km2 (480 sq mi) of tidal flats in Nigeria, making it the 27th ranked country in terms of tidal flat area. [42]
Nigeria is covered by three types of vegetation: forests (where there is significant tree cover), savannahs (insignificant tree cover, with grasses and flowers located between trees), and montane land (least common and mainly found in the mountains near the Cameroon border). [43] Both the forest zone and the savannah zone are divided into three parts. [44]
Some of the forest zone's most southerly portion, especially around the Niger River and Cross River deltas, is mangrove swamp. North of this is fresh water swamp, containing different vegetation from the salt water mangrove swamps, and north of that is rain forest. [44]
The savannah zone's three categories are divided into Guinean forest-savanna mosaic, made up of plains of tall grass which are interrupted by trees, the most common across the country; Sudan savannah, with short grasses and short trees; and Sahel savannah patches of grass and sand, found in the northeast. [44]
Nigeria has numerous tree species, of which the majority of them are native while few are exotic. A high percentage of man-made forests in the country is dominated by exotic species. [45] This culminated from the assumption that exotic trees are fast-growing. However, studies have also investigated the growth of indigenous trees in with that of exotic species. Due to overexploitation, the remaining natural ecosystems and primary forests in Nigeria are restricted to the protected areas which include one biosphere reserve, seven national parks, one World Heritage site, 12 Strict Nature Reserves (SNRs), 32 game reserves/wildlife sanctuaries, and hundreds of forest reserves. These are in addition to several ex-situ conservation sites such as arboreta, botanical gardens, zoological gardens, and gene banks managed by several tertiary and research institutions [46]
Many countries in Africa are affected by Invasive Alien Species (IAS). In 2004, the IUCN–World Conservation Union identified 81 IAS in South Africa, 49 in Mauritius, 37 in Algeria and Madagascar, 35 in Kenya, 28 in Egypt, 26 in Ghana and Zimbabwe, and 22 in Ethiopia. [47] However, very little is known about IAS in Nigeria, with most technical reports and literature reporting fewer than 10 invasive plants in the country. Aside from plant invaders, Rattus rattus and Avian influenza virus were also considered IAS in Nigeria. [48] The initial entry of IAS into Nigeria was mainly through exotic plant introductions by the colonial rulers either for forest tree plantations or for ornamental purposes. The entry of exotic plants into Nigeria during the post-independence era was encouraged by increasing economic activity, the commencement of commercial oil explorations, the introduction through ships, and the introduction of ornamental plants by commercial floriculturists. [48]
In the semi-arid and dry sub-humid savannas of West Africa, including Nigeria, numerous species of herbaceous dicots especially from the genera Crotalaria , Alysicarpus , Cassia and Ipomea are known to be widely used in livestock production. Quite often they are plucked or cut and fed either as fresh or conserved fodders. The utilization of these and many other herbs growing naturally within the farm environment is opportunistic. [46]
Many other species native to Nigeria, including soybean and its varieties, serve as an important source of oil and protein in this region. [49] There are also many plants with medicinal purposes that are used to aid the therapy in many organs. Some of these vegetations include Euphorbiaceae , which serve the purpose of aiding malaria, gastrointestinal disorders respectively and many other infections. Different stress factors such as droughts, low soil nutrients and susceptibility to pests have contributed to Maize plantations being an integral part of agriculture in this region. [50]
As industrialization has increased, it has also put species of trees in the forest at risk of air pollution and studies have shown that in certain parts of Nigeria, trees have shown tolerance and grow in areas that have a significant amount of air pollution [51]
Nigeria's natural resources include but are not limited to petroleum, tin, columbite, iron ore, coal, limestone, lead, zinc, natural gas, hydropower, and arable land.
This is a list of the extreme points of Nigeria, the points that are farther north, south, east or west than any other location.
Burkina Faso is a landlocked Sahel country that shares borders with six nations. It lies between the Sahara desert and the Gulf of Guinea, south of the loop of the Niger River, mostly between latitudes 9° and 15°N, and longitudes 6°W and 3°E. The land is green in the south, with forests and fruit trees, and semi-arid in the north. Most of central Burkina Faso lies on a savanna plateau, 198–305 metres (650–1,001 ft) above sea level, with fields, brush, and scattered trees. Burkina Faso's game preserves – the most important of which are Arly, Nazinga, and W National Park—contain lions, elephants, hippopotamus, monkeys, common warthogs, and antelopes. Previously the endangered painted hunting dog, Lycaon pictus occurred in Burkina Faso, but, although the last sightings were made in Arli National Park, the species is considered extirpated from Burkina Faso.
Chad is one of the 47 landlocked countries in the world and is located in North Central Africa, measuring 1,284,000 square kilometers (495,755 sq mi), nearly twice the size of France and slightly more than three times the size of California. Most of its ethnically and linguistically diverse population lives in the south, with densities ranging from 54 persons per square kilometer in the Logone River basin to 0.1 persons in the northern B.E.T. (Borkou-Ennedi-Tibesti) desert region, which itself is larger than France. The capital city of N'Djaména, situated at the confluence of the Chari and Logone Rivers, is cosmopolitan in nature, with a current population in excess of 700,000 people.
Ghana is a West African country in Africa, along the Gulf of Guinea.
Sierra Leone is a country in West Africa with a North Atlantic Ocean coastline to the west. It lies on the African Plate. The country's main geographical features include wooded hill country, an upland plateau, and mountains in the east. The highest peak is Mount Bintumani, which is 1,948 meters (6,391 ft) above sea level. The coastline has a belt of mangrove swamps. Freetown, the nation's capital city, has one of the world's largest natural harbours. The Rokel River is the largest river in Sierra Leone. It is 400 kilometres (250 mi) long and has a basin with a total area of 10,622 square kilometres (4,101 sq mi).
Sri Lanka, formerly called Ceylon, is an island nation in the Indian Ocean, southeast of the Indian subcontinent, in a strategic location near major sea lanes. The nation has a total area of 65,610 square kilometres (25,330 sq mi), with 64,630 square kilometres (24,950 sq mi) of land and 980 square kilometres (380 sq mi) of water. Its coastline is 1,340 kilometres (830 mi) long. The main island of Sri Lanka has an area of 64, 058 km2; it is the twenty-fifth largest island in the world by area. Dozens of offshore islands account for the remaining 1552 km2 area. The largest offshore island, Jaffna Island is separated by Chundikulam lagoon and Mannar Island, is linked to Adam's Bridge, a land connection to the Indian mainland, which is now mostly submerged with only a chain of limestone shoals remaining above sea level. According to temple records, this natural causeway was formerly whole, but was breached by a violent storm in 1480. The formation is also known as Rama's Bridge, as according to Hindu mythology, it was constructed during the rule of Lord Rama.
Togo is a small Sub-Saharan state, comprising a long strip of land in West Africa. Togo's geographic coordinates are a latitude of 8° north and a longitude of 1°10′ east. It is bordered by three countries: Benin to the east, with 644 km (400 mi) of border; Burkina Faso to the north, with 126 km (78 mi) of border; and Ghana, with 877 km (545 mi) of border. To the south Togo has 56 km (35 mi) of coastline along the Bight of Benin of the Gulf of Guinea in the North Atlantic Ocean. Togo stretches 579 km (360 mi) north from the Gulf and is only 160 km (99 mi) wide at the broadest point. In total, Togo has an area of 56,785 km2 (21,925 sq mi), of which 54,385 km2 (20,998 sq mi) is land and 2,400 km2 (927 sq mi) is water.
Mauritania, a country in the Western Region of the continent of Africa, is generally flat, its 1,030,700 square kilometres forming vast, arid plains broken by occasional ridges and clifflike outcroppings. Mauritania is the world’s largest country lying entirely below an altitude of 1,000 metres (3,300 ft). It borders the North Atlantic Ocean, between Senegal and Western Sahara, Mali and Algeria. It is considered part of both the Sahel and the Maghreb. A series of scarps face southwest, longitudinally bisecting these plains in the center of the country. The scarps also separate a series of sandstone plateaus, the highest of which is the Adrar Plateau, reaching an elevation of 500 metres or 1,640 feet. Spring-fed oases lie at the foot of some of the scarps. Isolated peaks, often rich in minerals, rise above the plateaus; the smaller peaks are called Guelbs and the larger ones Kedias. The concentric Guelb er Richat is a prominent feature of the north-central region. Kediet ej Jill, near the city of Zouîrât, has an elevation of 915 metres or 3,002 feet and is the highest peak.
Mali is a landlocked nation in West Africa, located southwest of Algeria, extending south-west from the southern Sahara Desert through the Sahel to the Sudanian savanna zone. Mali's size is 1,240,192 square kilometers.
Somalia is a country located in the Horn of Africa which officially consists of the intra-46th meridian east territory, the seven federal member states, namely Galmudug, Hirshabelle, Jubaland, South West, Puntland, and the municipality of Benadir. It is bordered by Ethiopia to the west, the Gulf of Aden to the north, the Somali Sea and Guardafui Channel to the east, and Kenya to the southwest. With a land area of 637,657 square kilometers, Somalia's terrain consists mainly of plateaus, plains and highlands. Its coastline is more than 3,333 kilometers in length, the longest of mainland Africa. It has been described as being roughly shaped "like a tilted number seven".
Benin, a narrow, key-shaped, north–south strip of land in West Africa, lies between the Equator and the Tropic of Cancer. Its latitude ranges from 6°30′ N to 12°30′ N and its longitude from 1° E to 3°40′ E. It is bounded by Togo to the west, Burkina Faso and Niger to the north, Nigeria to the east, and the Bight of Benin to the south.
The climate of India consists of a wide range of weather conditions across a vast geographic scale and varied topography. Based on the Köppen system, India encompasses a diverse array of climatic subtypes. These range from arid and semi-arid regions in the west to highland, sub-arctic, tundra, and ice cap climates in the northern Himalayan regions, varying with elevation. The northern lowlands experience subtropical conditions, with some areas at higher altitudes, like Srinagar, touching continental climates. In contrast, much of the south and the east exhibit tropical climate conditions, which support lush rainforests in these territories. Many regions have starkly different microclimates, making it one of the most climatically diverse countries in the world. The country's meteorological department follows the international standard of four seasons with some local adjustments: winter ,spring(February to March),summer, South West monsoon and North-east monsoon or autumn.
The wet season is the time of year when most of a region's average annual rainfall occurs. Generally, the season lasts at least one month. The term green season is also sometimes used as a euphemism by tourist authorities. Areas with wet seasons are dispersed across portions of the tropics and subtropics.
Asaba is an Igbo town and the capital of Delta State, Nigeria. A rapidly growing urban area, it is located on the western bank of the Niger River, in the Oshimili South Local Government Area. Asaba had a population of 149,603 as at the 2006 census, and a fast growing metropolitan population of over half a million people.
The wildlife of Nigeria consists of the flora and fauna of this country in West Africa. Nigeria has a wide variety of habitats, ranging from mangrove swamps and tropical rainforest to savanna with scattered clumps of trees. About 290 mammal species and 940 bird species have been recorded in the country.
Tropical savanna climate or tropical wet and dry climate is a tropical climate sub-type that corresponds to the Köppen climate classification categories Aw and As. The driest month has less than 60 mm (2.4 in) of precipitation and also less than mm of precipitation.
Vietnam has a monsoon-influenced climate typical of that of mainland Southeast Asia. The diverse topography, long latitude, and influences from the South China Sea lead to climatic conditions varying significantly between regions of Vietnam. The northern region experiences a monsoonal and humid subtropical climate with four distinct seasons with winters typically dry and summers ranging from hot to mild. In southern and central areas, the climate is tropical monsoon with only two seasons. In addition, a temperate climate exists in mountainous areas, which are found in Sa Pa and Da Lat, while a more continental climate exists in Lai Châu Province and Sơn La Province.
The Climate of Venezuela is characterized for being tropical and megathermal as a result of its geographical location near the Equator, but because of the topography and the dominant wind direction, several climatic types occur which can be the same as found in temperate latitudes, and even polar regions. Latitude exerts little influence on the Venezuelan climate. While the coastal cities of Maracaibo, Barcelona, Porlamar and Maiquetia can get extremely hot, cities in valleys such as Mérida, Caracas, Los Teques and San Cristobal have cooler climates, and the highest towns of Mucuchies and Apartaderos have cold (tundra) climates.
Kajuru is a local government area in southern Kaduna State, Nigeria. Its also headquarters is in the town of Kajuru. The local government is located on longitude 9° 59'N and 10° 55'N and latitude 7° 34'E and 8° 13'E, with an area of 2,229 km2.
The West Sudanian savanna is a tropical savanna ecoregion that extends across West Africa.
The climate of Nigeria is mostly tropical. Nigeria has three distinct climatic zones, two seasons, and an average temperature ranging between 21 °C and 35 °C. Two major elements determine the temperature in Nigeria: the altitude of the sun and the atmosphere's transparency. Its rainfall is mediated by three distinct conditions including convectional, frontal, and orographical determinants. Statistics from the World Bank Group showed Nigeria's annual temperature and rainfall variations, the nation's highest average annual mean temperature was 28.1 °C in 1938, while its wettest year was 1957 with an annual mean rainfall of 1,441.45mm.