St Lucia weather in December 2021

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

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The December 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.

How hot is it in St Lucia in December?

Daytime temperatures usually reach 29°C in Castries, St Lucia in December with moderate heat and humidity, falling to 23°C at night.

How sunny is it in St Lucia in December?

There are normally 8 hours of bright sunshine each day in Castries, St Lucia in December - that's 68% of daylight hours.

How warm is the sea around St Lucia in December?

The average sea temperature around Castries, St Lucia in December is 28°C.

Does it rain in St Lucia in December?

There are usually 18 days with some rain in Castries, St Lucia in December and the average monthly rainfall is 149mm.

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

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St Lucia sunrise & sunset times for December 2021

Browse the sunrise and sunset times for St Lucia in December 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
Wednesday, 1st December 2021 06:12 17:34
Thursday, 16th December 2021 06:21 17:39
Friday, 31st December 2021 06:28 17:47
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