Castries weather

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The weather guide for Castries, St Lucia 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 Castries?

The hottest time of year in Castries is normally September. Expect maximum daytime temperatures to reach 30°C with very high heat and humidity.

Which month has the most rain in Castries?

In terms of rainfall, October is usually the wettest month in Castries with 269mm on average. There are normally 18 days in October with some rain.

When is it sunniest in Castries?

The sunniest time of year in Castries is normally January with bright sunshine on average for 72% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in Castries?

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

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

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Compare Castries weather with the USA

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

Maximum daytime temperature (°C)

Castries, St Lucia
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: Castries, St Lucia hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
1%
2.4%
3.6%
1.8%
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Castries, St Lucia 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.

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Where's hot in St Lucia right now?

Below are the temperatures expected today at popular destinations in St Lucia. Select a destination to compare today's forecast with average weather conditions.

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