U.S. Virgin Islands in September: where is it warmest?
In September, Saint Croix is the warmest place with 28 °C by day, Saint Thomas the coolest with 28 °C. 1 of 2 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Saint Croix | 77 | 28° | 29° | 8 h | 18 |
| Saint Thomas | 59 | 28° | 29° | 8 h | 18 |
U.S. Virgin Islands in September: quick answers
U.S. Virgin Islands in September: where is it warmest?
The warmest places in September are Saint Croix (28 °C) and Saint Thomas (28 °C).
U.S. Virgin Islands in September: where is the sea warmest?
The sea is warmest at Saint Croix (29 °C) and Saint Thomas (29 °C).
U.S. Virgin Islands in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Saint Croix and Saint Thomas.
U.S. Virgin Islands month by month
U.S. Virgin Islands: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences