Gustavia (St Barts) weather by month
The best time to visit Gustavia (St Barts) is January to March — 90/100 in March, 26°C and 9 rainy days. The best season is the dry season, December to June (89/100 on average).
The worst month is October at 81/100 — hot, rainy, clean air. See October →
Updated September 2026 · climate normals from ERA5 reanalysis
Best season: December to June (89/100 on average) · worst October (81/100)
- Days
- 26°C
- Nights
- 25°C
- Wet days
- 9
- Sun
- 11.1 h
- Humidity
- 76%
- Daylight
- 12 h
Gustavia, month by month
Comfort score out of 100 for the kind of trip Gustavia is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Gustavia through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
- January
- St Barth Music Festival5–25 Jan (usually)Festival
- March
- St Barths Bucket Regatta10–25 Mar (usually)Festival
- April
- Les Voiles de St Barth5–25 Apr (usually)Festival
- June
- Atlantic hurricane season1 Jun – 30 NovHazard
- September
- Autumn shutdown1 Sep – 31 OctSeason
- November
- St Barth Cata Cup16–23 NovFestival
- December
- New Year's superyacht week26 Dec – 2 Jan (usually)Holiday
Crowds in Gustavia in March
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.
BusySt Barths Bucket Regatta, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Traveller notes on Gustavia
What people who have been say about the place — the year-round notes first, then month by month.
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.
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.
Add your own note from Gustavia's card on the map.