Gustavia weather by month & the best time to visit
St. Barthélemy · beach resort · semi-arid climate
The best time to visit Gustavia is February — its sunniest month (Sunshine Score 95/100), with March and January close behind. Gustavia averages about 3,109 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 12 mm of rain in February.
When is the best time to visit Gustavia?
For sunshine, the best time to visit Gustavia is February, then March and January. The dullest month is October (78/100, 108 mm of rain). The full month-by-month picture is in the table below.
How sunny is Gustavia?
Gustavia is one of the sunniest places on Earth: about 3,109 hours of sunshine a year. February (95/100) is noticeably better than October (78). It is the only destination Sunshine Atlas tracks in St. Barthélemy. Rain has a clear season: the wettest stretch, around October, carries about 45% of the annual 615 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 94 | 26° / 79°F | 25° / 77°F | 20 mm | 8 | 28° / 82°F |
| February | 95 | 26° / 79°F | 25° / 77°F | 12 mm | 10 | 27° / 81°F |
| March | 95 | 26° / 79°F | 25° / 77°F | 16 mm | 11 | 27° / 81°F |
| April | 93 | 27° / 81°F | 26° / 79°F | 26 mm | 12 | 28° / 82°F |
| May | 86 | 27° / 81°F | 27° / 81°F | 63 mm | 11 | 29° / 84°F |
| June | 90 | 28° / 82°F | 27° / 81°F | 42 mm | 10 | 29° / 84°F |
| July | 88 | 28° / 82°F | 28° / 82°F | 54 mm | 10 | 29° / 84°F |
| August | 85 | 29° / 84°F | 28° / 82°F | 66 mm | 11 | 30° / 86°F |
| September | 81 | 29° / 84°F | 28° / 82°F | 90 mm | 10 | 30° / 86°F |
| October | 78 | 29° / 84°F | 28° / 82°F | 108 mm | 9 | 30° / 86°F |
| November | 83 | 28° / 82°F | 27° / 81°F | 78 mm | 8 | 29° / 84°F |
| December | 90 | 27° / 81°F | 26° / 79°F | 40 mm | 7 | 29° / 84°F |
Sea temperature in Gustavia by month
The sea off Gustavia is warmest in August at around 30°C / 86°F, and coolest in February at 27°C / 81°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Gustavia: questions and answers
What kind of destination is Gustavia?
Gustavia is a beach resort in St. Barthélemy with a semi-arid climate — the sea reaches 30°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Gustavia get a year?
Gustavia gets about 3,109 hours of sunshine a year, at its best around February.
When is the best time to visit Gustavia?
The sunniest time to visit Gustavia is February, when the Sunshine Score peaks at 95/100 (with March and January close behind). Expect daytime highs around 26°C / 79°F.
What is the least sunny month in Gustavia?
October is the least sunny month in Gustavia, scoring 78/100 with about 108 mm of rain.
What is the sea temperature in Gustavia?
The sea in Gustavia ranges from about 27°C (February) to 30°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Gustavia?
The typical midday UV index in Gustavia peaks around 12 (extreme) in April, easing to about 7 (high) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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