St Lucia weather in May 2020

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

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

Guide to St Lucia weather in May

The average maximum daytime temperature in St Lucia in May is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 8 hours of bright sunshine each day, which represents 64% of the 13 hours of daylight.

Expect 124mm (4.9 inches) of rainfall across the whole of May with 15 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around St Lucia in May is 28°C (82°F).

The weather in St Lucia in May is represented by Castries.

St Lucia sunrise & sunset times for May 2020

Browse the sunrise & sunset times for St Lucia in May 2020. Select a month to view St Lucia sunrise & sunset times for the next twelve months. The St Lucia sunrise & sunset times shown below are for Castries.

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