St Barthelemy weather

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The weather guide for St Barthelemy shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in St Barthelemy?

The hottest time of year in St Barthelemy is normally September. Expect maximum daytime temperatures to reach 31°C with very high heat and humidity.

Which month has the most rain in St Barthelemy?

In terms of rainfall, September is usually the wettest month in St Barthelemy with 129mm on average. There are normally 19 days in September with some rain.

When is it sunniest in St Barthelemy?

The sunniest time of year in St Barthelemy is normally January with bright sunshine on average for 75% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in St Barthelemy?

The sea is usually at its warmest in St Barthelemy in September when the water temperature reaches 29°C.

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

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Compare St Barthelemy weather with the USA

Below the St Barthelemy weather chart shows average maximum daytime temperature for St Barthelemy and the USA (Washington).

Maximum daytime temperature (°C)

St Barthelemy
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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Tropical storm risk: St Barthelemy hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
2.7%
3.8%
1.5%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The St Barthelemy tropical storm risk chart above shows the hurricane season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

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