Gustavia (St Barts) weather in May
May in Gustavia: hot, a little rain, with clean air — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#5 of 12 months in Gustavia · #258 of 1413 destinations to visit in May · comfort 88/100 (tier A)
- Days
- 27°C
- Nights
- 26°C
- Wet days
- 10
- Sun
- 11.7 h
- Humidity
- 80%
- Daylight
- 13 h

Traveller notes on Gustavia in May
Other months in Gustavia
St. Barths' forum doesn't hide that October is the island's off-season for good reason - deep in hurricane season, with Gustavia turning into something close to a ghost town as most shops shutter, though core restaurants stay open. When there's no storm system nearby the weather can be genuinely lovely, but posters were honest that the opposite is possible too: one traveler reported four straight days of rain totaling over 12 inches. The trade-off multiple regulars highlighted: the lowest room rates of the year and zero crowds, for anyone willing to accept real weather risk.
Forum posters describe April as close to ideal - typically around 84F with low precipitation, and while forecasts often show rain in the mix, posters say it usually amounts to no more than about 10 minutes of actual rain on a given day. Any rain that does fall tends to be a fast-moving, widely scattered shower lasting minutes rather than a sustained downpour, with prolonged rain called genuinely rare this time of year. Posters call the good-weather run typically holding through March into April before conditions shift later in the year. For Gustavia specifically, posters describe the harbor town as St. Barth's main hub - plenty of shops and restaurants clustered around the waterfront, an easy, walkable base for exploring the rest of the island.
Add your own note from Gustavia's card on the map.
Gustavia climate normals — May
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.
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.