St Lucia weather averages

Going to St Lucia? Find the best month to visit St Lucia based on the weather.

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Check St Lucia weather averages before you book your next holiday in 2019/2020. Today's maximum temperature in St Lucia is expected to be 84°F, while the average maximum temperature in January is 82°F. The holiday weather guide shown above is for Castries.

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More about St Lucia

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The weather for St Lucia, represented by Castries, 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.

Metric (°C)  |  Imperial (°F)

St Lucia weather averages: best month

St Lucia Best month Averages
Warmest May, June, July, August, September & October 86°F
Sunniest January, February, March, April, May, June, July, August, September, November & December 8 hours per day
Least rain April 11 days
Warmest sea August, September & October 84°F

St Lucia climate guide

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St Lucia weather overview

St Lucia, one of the Windward Islands, is large and mountainous with volcanic peaks. It attracts more rain than is normal tor the Caribbean. This falls mainly from May to January and is most intense during the July to November hurricane season when tropical storms can make life difficult even if they don't hit the island directly.

Tropical Beach at Marigot Bay, St Lucia © Tim Watson - Fotolia.com
Tropical Beach at Marigot Bay, St Lucia © Tim Watson - Fotolia.com

The west coast (where Castries is located) is more sheltered from the prevailing winds. Temperatures on St Lucia are high throughout the year but rarely unbearable since sea breezes help dissipate the humidity, although nights can be sticky.

What to pack for St Lucia weather

Light cotton clothing is appropriate, and be prepared for rain at any time of the year.

Tropical storm risk: St Lucia hurricane season

% of month affected by tropical storms
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0
0
0
0
<1%
1%
2%
4%
2%
<1%
0
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Dec

The St Lucia tropical storm risk chart above shows the hurricane season for Castries, St Lucia. 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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St Lucia weather averages by month

Check St Lucia holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare St Lucia weather with the USA

Below the St Lucia weather chart shows maximum daytime temperature for St Lucia (Castries) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°F)

St Lucia (Castries)
USA (Washington)
Jan
Feb
Mar
Apr
May
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Oct
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Dec

Metric (°C)  |  Imperial (°F)

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More St Lucia destinations

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