St Lucia weather averages

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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.

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

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

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.

Discover more about St Lucia

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 (°C)

St Lucia (Castries)
USA (Washington)

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

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