SeasonMapGustavia (St Barts) weather in December
Saint Barthélemy
December in Gustavia: warm, a little rain, with clean air — an excellent time to visit.
#6 of 12 months in Gustavia · #125 of 1383 destinations to visit in December · comfort 89/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Gustavia in December
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Gustavia climate normals — December
| Daytime high | 27°C / 80°F | 🌤 warm |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Sea temperature | 28°C / 82°F | 😎 warm sea |
| Rainfall | 36 mm / 1.4 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 21°C / 70°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 11.1 h | |
| Wind | 29 km/h / 18 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Gustavia in December
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 seasonschool holidays in 3 of the markets that fill it, an 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 December — FAQ
- Is December a good time to visit Gustavia?
- December in Gustavia: warm, a little rain, with clean air — an excellent time to visit. It ranks #6 of 12 months for Gustavia on SeasonMap's comfort score (89/100).
- What is the weather like in Gustavia in December?
- In December, Gustavia averages a daily high of 26.6°C and a low of 25.3°C, with about 35.6 mm of rain over roughly 10.4 rainy days.
- What is the air quality in Gustavia in December?
- Gustavia has a mean US Air Quality Index of about 38 in December.
Other months in Gustavia
Compare Gustavia in December
Warmer or cooler than Gustavia in December
Similar destinations in Caribbean — December
Within 300 km: Philipsburg's Cruise ship season around 1 Nov – 30 Apr, and Charlotte Amalie's Cruise season around 1 Nov – 30 Apr.