Island, U.S. Virgin Islands
St. Thomas weather by month and the best time to visit
When to go to St. Thomas
Dec–Apr is dry and busiest. May–Nov is hotter and wetter with hurricane risk Aug–Oct; Carnival is in April.
St. Thomas weather by month
Average daily high, rainfall and conditions.
- Jan26°40 mm
- Feb26°29 mm
- Mar26°38 mm
- Apr27°54 mm
- May28°99 mm
- Jun28°73 mm
- Jul29°88 mm
- Aug29°113 mm
- Sep29°146 mm
- Oct29°142 mm
- Nov28°122 mm
- Dec27°59 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 26°C79°F | 25°C78°F | 40 mm | 76% | Pleasant |
| February | 26°C79°F | 25°C77°F | 29 mm | 75% | Pleasant |
| March | 26°C79°F | 25°C77°F | 38 mm | 75% | Pleasant |
| April | 27°C80°F | 26°C78°F | 54 mm | 76% | Pleasant |
| May | 28°C82°F | 27°C80°F | 99 mm | 78% | Pleasant |
| June | 28°C83°F | 28°C82°F | 73 mm | 79% | Pleasant |
| July | 29°C83°F | 28°C82°F | 88 mm | 79% | Pleasant |
| August | 29°C84°F | 28°C83°F | 113 mm | 78% | Pleasant |
| September | 29°C84°F | 28°C83°F | 146 mm | 78% | Pleasant |
| October | 29°C84°F | 28°C82°F | 142 mm | 78% | Pleasant |
| November | 28°C82°F | 27°C81°F | 122 mm | 77% | Pleasant |
| December | 27°C81°F | 26°C79°F | 59 mm | 76% | Pleasant |
Quick answers
What is the best month to visit St. Thomas?
Dec–Apr. Dec–Apr is dry and busiest. May–Nov is hotter and wetter with hurricane risk Aug–Oct; Carnival is in April.
When is the rainy season in St. Thomas?
Rain peaks in September with about 146 mm. No month averages 150 mm or more.
What is the hottest month in St. Thomas?
September, with average highs of 29°C (84°F).
How cold does St. Thomas get?
The coolest nights are in February, averaging 25°C (77°F).
More about St. Thomas
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.