Home › Cities › St Barthélemy › Gustavia
Gustavia, St Barthélemy climate
Aw Tropical savanna (dry winter)
Gustavia has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is August with an average daily high near 89°F, while the coldest is February averaging around 72°F at night. Around 38 inches of precipitation falls each year, peaking in October (6.0 inches) and easing off in March (1.8 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)Gustavia climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 84 | 85 | 86 | 88 | 88 | 89 | 88 | 88 | 86 | 85 |
| Avg temp (°F) | 78 | 78 | 79 | 80 | 81 | 83 | 83 | 83 | 83 | 82 | 81 | 79 |
| Avg low (°F) | 73 | 72 | 73 | 74 | 76 | 77 | 77 | 78 | 77 | 76 | 75 | 74 |
| Precipitation (in) | 2.2 | 2.1 | 1.8 | 2.5 | 2.9 | 2.6 | 3.4 | 3.5 | 4.0 | 6.0 | 4.0 | 3.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 84 | 85 | 86 | 88 |
| Avg temp (°F) | 78 | 78 | 79 | 80 | 81 | 83 |
| Avg low (°F) | 73 | 72 | 73 | 74 | 76 | 77 |
| Precipitation (in) | 2.2 | 2.1 | 1.8 | 2.5 | 2.9 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 89 | 88 | 88 | 86 | 85 |
| Avg temp (°F) | 83 | 83 | 83 | 82 | 81 | 79 |
| Avg low (°F) | 77 | 78 | 77 | 76 | 75 | 74 |
| Precipitation (in) | 3.4 | 3.5 | 4.0 | 6.0 | 4.0 | 3.3 |
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 (mph) | 13.9 | 13.6 | 12.7 | 12.3 | 12.5 | 13.8 | 14.4 | 13.1 | 11.3 | 10.9 | 12.1 | 13.5 |
| 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 (mph) | 13.9 | 13.6 | 12.7 | 12.3 | 12.5 | 13.8 |
| 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 (mph) | 14.4 | 13.1 | 11.3 | 10.9 | 12.1 | 13.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Robert L Bradshaw, a weather station, about 67 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.