Saint Thomas weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: December – April
What is the weather like in Saint Thomas in May?
In May, Saint Thomas is warm: daytime highs average 27 °C, and even at night it stays warm at around 26 °C. The sea averages 27.5 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 13 rainy days and 72 mm in total. The air is often humid and muggy. All in all, May is a good month for a holiday in Saint Thomas.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 12 h 59 min05:46 – 18:45
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 27 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−4America/St_Thomas
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %87 %
- Few rainy daysweight 30 %36 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Saint Thomas in May: quick answers
Is Saint Thomas hot in May?
Warm rather than hot: in May, daytime highs in Saint Thomas average 27 °C and nights cool to about 26 °C.
Can you swim in Saint Thomas in May?
Yes. In May the sea averages 27.5 °C – lovely and warm for swimming.
Does it rain much in Saint Thomas in May?
Rain is frequent, with about 13 rainy days and 72 mm in total.
Saint Thomas month by month
The whole year in Saint ThomasAll destinations: U.S. Virgin IslandsCaribbean weather in MayWhere to go in MaySea temperature in May
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