St Barthelemy weather in December 2025

Q: How hot is it in St Barthelemy in December?

Daytime temperatures usually reach 29°C in St Barthelemy in December with moderate heat and humidity, falling to 23°C at night.

Q: How sunny is it in St Barthelemy in December?

There are normally 8 hours of bright sunshine each day in St Barthelemy in December - that's 71% of daylight hours.

Q: How warm is the sea around St Barthelemy in December?

The average sea temperature around St Barthelemy in December is 27°C.

Q: Does it rain in St Barthelemy in December?

There are usually 20 days with some rain in St Barthelemy in December and the average monthly rainfall is 89mm.

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Barthelemy in December. Check more long-term weather averages for St Barthelemy in December before you book your next holiday to St Barthelemy in 2025/2026.

29
29°C max day temperature
8
8 hours of sunshine per day
20
20 days with some rainfall
23
23°C min night temperature
11
11 hours of daylight per day
M
Moderate heat & humidity
89
89 mm of monthly rainfall
7
7 (High) UV index
27
27°C sea temperature

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The December weather guide for St Barthelemy shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How hot is it in St Barthelemy in December?

Daytime temperatures usually reach 29°C in St Barthelemy in December with moderate heat and humidity, falling to 23°C at night.

How sunny is it in St Barthelemy in December?

There are normally 8 hours of bright sunshine each day in St Barthelemy in December - that's 71% of daylight hours.

How warm is the sea around St Barthelemy in December?

The average sea temperature around St Barthelemy in December is 27°C.

Does it rain in St Barthelemy in December?

There are usually 20 days with some rain in St Barthelemy in December and the average monthly rainfall is 89mm.

St Barthelemy December sunrise & sunset times

Browse the sunrise and sunset times for St Barthelemy in December 2025. Select a month to view St Barthelemy sunrise and sunset times for the next 12 months.

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