St Lucia weather in June 2025

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Lucia in June. Check more long-term weather averages for St Lucia in June before you book your next holiday to St Lucia in 2025/2026.

  • 30°C maximum daytime temperature in June in St Lucia (Castries)30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 19 days with some rainfall in June in St Lucia (Castries)19
    19 days with some rainfall
  • 24°C minimum night-time temperature in June in St Lucia (Castries)24
    24°C min night temperature
  • 13 hours of daylight per day in June in St Lucia (Castries)13
    13 hours of daylight per day
  • High heat & humidity in June in St Lucia (Castries)H
    High heat & humidity
  • 182 mm monthly rainfall in June in St Lucia (Castries)182
    182 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in June in St Lucia (Castries)11
    11+ (Extreme) UV index
  • 28°C sea temperature in June in St Lucia (Castries)28
    28°C sea temperature

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The June 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 June. Select a holiday destination to see more weather parameters.

All St Lucia destinations

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

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More about St Lucia

How hot is it in St Lucia in June?

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

How sunny is it in St Lucia in June?

There are normally 8 hours of bright sunshine each day in Castries, St Lucia in June - that's 58% of daylight hours.

How warm is the sea around St Lucia in June?

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

Does it rain in St Lucia in June?

There are usually 19 days with some rain in Castries, St Lucia in June and the average monthly rainfall is 182mm.

St Lucia June sunrise & sunset times

Browse the sunrise and sunset times for St Lucia in June 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
Sunday, 1st June 2025 05:35 18:29
Sunday, 15th June 2025 05:36 18:33
Monday, 30th June 2025 05:40 18:36

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