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Basse Santa Su, Gambia climate
Aw Tropical savanna (dry winter)
Basse Santa Su has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is May with an average daily high near 106°F, while the coldest is January averaging around 66°F at night. Precipitation totals about 37 inches a year and is strongly seasonal — August alone averages 15.0 inches while February barely receives 0.00 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Basse Santa Su climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 95 | 99 | 103 | 106 | 106 | 100 | 93 | 90 | 92 | 97 | 99 | 96 |
| Avg temp (°F) | 80 | 85 | 89 | 93 | 93 | 90 | 84 | 82 | 82 | 85 | 84 | 81 |
| Avg low (°F) | 66 | 71 | 75 | 79 | 81 | 79 | 75 | 74 | 73 | 73 | 69 | 66 |
| Precipitation (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 2.9 | 7.9 | 15.0 | 9.8 | 0.5 | 0.0 | 0.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 95 | 99 | 103 | 106 | 106 | 100 |
| Avg temp (°F) | 80 | 85 | 89 | 93 | 93 | 90 |
| Avg low (°F) | 66 | 71 | 75 | 79 | 81 | 79 |
| Precipitation (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 2.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 93 | 90 | 92 | 97 | 99 | 96 |
| Avg temp (°F) | 84 | 82 | 82 | 85 | 84 | 81 |
| Avg low (°F) | 75 | 74 | 73 | 73 | 69 | 66 |
| Precipitation (in) | 7.9 | 15.0 | 9.8 | 0.5 | 0.0 | 0.0 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.0 | 0.0 | 0.1 | 0.1 | 1 | 5 | 9 | 12 | 12 | 4 | 0.2 | — |
| Days with high ≥ 90°F (days) | 21 | 21 | 25 | 24 | 24 | 22 | 19 | 15 | 17 | 22 | 22 | 21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.0 | 0.0 | 0.1 | 0.1 | 1 | 5 |
| Days with high ≥ 90°F (days) | 21 | 21 | 25 | 24 | 24 | 22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 12 | 12 | 4 | 0.2 | — |
| Days with high ≥ 90°F (days) | 19 | 15 | 17 | 22 | 22 | 21 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 31 | 31 | 36 | 50 | 61 | 71 | 76 | 66 | 51 | 41 | 41 |
| Relative humidity (%) | 19 | 15 | 15 | 17 | 26 | 47 | 69 | 81 | 83 | 74 | 49 | 30 |
| Wind speed (mph) | 7.4 | 7.7 | 7.1 | 6.6 | 6.6 | 6.7 | 5.6 | 4.5 | 3.5 | 3.2 | 4.3 | 6.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 31 | 31 | 36 | 50 | 61 |
| Relative humidity (%) | 19 | 15 | 15 | 17 | 26 | 47 |
| Wind speed (mph) | 7.4 | 7.7 | 7.1 | 6.6 | 6.6 | 6.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 76 | 66 | 51 | 41 | 41 |
| Relative humidity (%) | 69 | 81 | 83 | 74 | 49 | 30 |
| Wind speed (mph) | 5.6 | 4.5 | 3.5 | 3.2 | 4.3 | 6.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 21 years of daily observations at Tambacounda, a weather station, about 77 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.