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Basseterre, Saint Kitts and Nevis climate
Aw Tropical savanna (dry winter)
Basseterre has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is August with an average daily high near 31°C, while the coldest is February averaging around 22°C at night. Around 968 mm of precipitation falls each year, peaking in October (151 mm) and easing off in March (44 mm).
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)Basseterre climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 29 |
| Avg temp (°C) | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 23 | 22 | 23 | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 23 |
| Precipitation (mm) | 57 | 52 | 44 | 63 | 74 | 65 | 86 | 90 | 101 | 151 | 102 | 83 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 30 | 30 | 31 |
| Avg temp (°C) | 26 | 26 | 26 | 26 | 27 | 28 |
| Avg low (°C) | 23 | 22 | 23 | 23 | 24 | 25 |
| Precipitation (mm) | 57 | 52 | 44 | 63 | 74 | 65 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 30 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 24 | 23 |
| Precipitation (mm) | 86 | 90 | 101 | 151 | 102 | 83 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 36 | 38 | 40 | 52 | 51 | 45 | 43 | 51 | 47 | 44 | 39 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 79 | 78 | 79 | 79 | 79 | 79 | 78 | 77 |
| Wind speed (m/s) | 6.2 | 6.1 | 5.7 | 5.5 | 5.6 | 6.2 | 6.4 | 5.9 | 5.1 | 4.9 | 5.4 | 6.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 36 | 38 | 40 | 52 | 51 |
| Relative humidity (%) | 76 | 75 | 75 | 76 | 79 | 78 |
| Wind speed (m/s) | 6.2 | 6.1 | 5.7 | 5.5 | 5.6 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 45 | 43 | 51 | 47 | 44 | 39 |
| Relative humidity (%) | 79 | 79 | 79 | 79 | 78 | 77 |
| Wind speed (m/s) | 6.4 | 5.9 | 5.1 | 4.9 | 5.4 | 6.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Robert L Bradshaw, a weather station, about 2 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.