SeasonMapGustavia (St Barts) weather in May
Saint Barthélemy
May in Gustavia: hot, a little rain, with clean air — an excellent time to visit.
#5 of 12 months in Gustavia · #253 of 1383 destinations to visit in May · comfort 88/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Gustavia in May
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Gustavia climate normals — May
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 30°C / 86°F | |
| Sea temperature | 28°C / 83°F | ♨️ bath-warm |
| Rainfall | 45 mm / 1.8 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 23°C / 73°F | |
| Sunshine | 11.7 h/day | |
| Daylight | 13 h | |
| Wind | 29 km/h / 18 mph | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Gustavia in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonan ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Gustavia's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherGustavia's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
Nearby, and something's on
Within 300 km of Gustavia — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Gustavia?
Gustavia in May — FAQ
- Is May a good time to visit Gustavia?
- May in Gustavia: hot, a little rain, with clean air — an excellent time to visit. It ranks #5 of 12 months for Gustavia on SeasonMap's comfort score (88/100).
- What is the weather like in Gustavia in May?
- In May, Gustavia averages a daily high of 26.9°C and a low of 25.7°C, with about 45.4 mm of rain over roughly 10.3 rainy days.
- What is the air quality in Gustavia in May?
- Gustavia has a mean US Air Quality Index of about 36 in May.
Other months in Gustavia
Compare Gustavia in May
Warmer or cooler than Gustavia in May
Similar destinations in Caribbean — May
Within 300 km: Philipsburg's Sea turtle nesting around 1 Apr – 30 Nov, and Charlotte Amalie's St Thomas Carnival on 26 Apr – 2 May.