St Lucia weather in August 2021

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Below are average maximum temperatures at popular destinations in St Lucia in August. Select a destination to see more weather parameters.

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The August weather guide for St Lucia 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.

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How hot is it in St Lucia in August?

Daytime temperatures usually reach 30°C in Castries, St Lucia in August with very high heat and humidity, falling to 24°C at night.

How sunny is it in St Lucia in August?

There are normally 8 hours of bright sunshine each day in Castries, St Lucia in August - that's 65% of daylight hours.

How warm is the sea around St Lucia in August?

The average sea temperature around Castries, St Lucia in August is 29°C.

Does it rain in St Lucia in August?

There are usually 20 days with some rain in Castries, St Lucia in August and the average monthly rainfall is 216mm.

What is the chance of a hurricane in St Lucia in August?

On average less than 1 day in August in Castries, St Lucia is likely to be affected by the passage of one or more tropical storms.

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

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St Lucia sunrise & sunset times for August 2021

Browse the sunrise and sunset times for St Lucia in August 2021. Select a month to view St Lucia sunrise & sunset times for the next 12 months. The St Lucia sunrise and sunset times shown below are for Castries.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st August 2021 05:48 18:32
Monday, 16th August 2021 05:51 18:25
Tuesday, 31st August 2021 05:52 18:16
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