St Lucia weather in July 2025

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

  • 30°C maximum daytime temperature in July in St Lucia (Castries)30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 21 days with some rainfall in July in St Lucia (Castries)21
    21 days with some rainfall
  • 25°C minimum night-time temperature in July in St Lucia (Castries)25
    25°C min night temperature
  • 13 hours of daylight per day in July in St Lucia (Castries)13
    13 hours of daylight per day
  • High heat & humidity in July in St Lucia (Castries)H
    High heat & humidity
  • 245 mm monthly rainfall in July in St Lucia (Castries)245
    245 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in July in St Lucia (Castries)11
    11+ (Extreme) UV index
  • 28°C sea temperature in July in St Lucia (Castries)28
    28°C sea temperature

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The July 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 July. 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 July?

Daytime temperatures usually reach 30°C in Castries, St Lucia in July with high heat and humidity, falling to 25°C at night.

How sunny is it in St Lucia in July?

There are normally 8 hours of bright sunshine each day in Castries, St Lucia in July - that's 61% of daylight hours.

How warm is the sea around St Lucia in July?

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

Does it rain in St Lucia in July?

There are usually 21 days with some rain in Castries, St Lucia in July and the average monthly rainfall is 245mm.

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

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

St Lucia July sunrise & sunset times

Browse the sunrise and sunset times for St Lucia in July 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 July 2025 05:40 18:36
Wednesday, 16th July 2025 05:44 18:36
Thursday, 31st July 2025 05:48 18:33

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