St Lucia weather in April 2025

Expect 84°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Lucia in April. Check more long-term weather averages for St Lucia in April before you book your next holiday to St Lucia in 2025/2026.

  • 84°F maximum daytime temperature in April in St Lucia (Castries)84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in April in St Lucia (Castries)11
    11 days with some rainfall
  • 73°F minimum night-time temperature in April in St Lucia (Castries)73
    73°F min night temperature
  • 12 hours of daylight per day in April in St Lucia (Castries)12
    12 hours of daylight per day
  • High heat & humidity in April in St Lucia (Castries)H
    High heat & humidity
  • 3.8 inches monthly rainfall in April in St Lucia (Castries)3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in St Lucia (Castries)11
    11+ (Extreme) UV index
  • 81°F sea temperature in April in St Lucia (Castries)81
    81°F sea temperature

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The April weather guide for St Lucia (Castries) 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.

Top St Lucia destinations

Below are average maximum temperatures at popular countries, regions and places in St Lucia in April. Select a holiday destination to see more weather parameters.

All St Lucia destinations

Metric (°C)  |  Imperial (°F)

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More about St Lucia

How hot is it in St Lucia in April?

Daytime temperatures usually reach 84°F in Castries, St Lucia in April with high heat and humidity, falling to 73°F at night.

How sunny is it in St Lucia in April?

There are normally 8 hours of bright sunshine each day in Castries, St Lucia in April - that's 67% of daylight hours.

How warm is the sea around St Lucia in April?

The average sea temperature around Castries, St Lucia in April is 81°F.

Does it rain in St Lucia in April?

There are usually 11 days with some rain in Castries, St Lucia in April and the average monthly rainfall is 3.8 inches.

St Lucia April sunrise & sunset times

Browse the sunrise and sunset times for St Lucia in April 2025. Select a month to view St Lucia sunrise and 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
Tuesday, 1st April 2025 06:00 18:16
Tuesday, 15th April 2025 05:51 18:18
Wednesday, 30th April 2025 05:42 18:20

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