Castries weather in October 2025

Expect daytime maximum temperatures of 30°C in Castries, St Lucia in October and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 18 days with some rainfall and typically 269 mm of rainfall in the month.

  • 30°C maximum daytime temperature in October in Castries30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in October in Castries18
    18 days with some rainfall
  • 24°C minimum night-time temperature in October in Castries24
    24°C min night temperature
  • 12 hours of daylight per day in October in Castries12
    12 hours of daylight per day
  • High heat & humidity in October in CastriesH
    High heat & humidity
  • 269 mm monthly rainfall in October in Castries269
    269 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in October in Castries11
    11 (Extreme) UV index
  • 29°C sea temperature in October in Castries29
    29°C sea temperature

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The October 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.

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

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More about St Lucia

How hot is it in Castries in October?

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

How sunny is it in Castries in October?

There are normally 7 hours of bright sunshine each day in Castries in October - that's 63% of daylight hours.

How warm is the sea around Castries in October?

The average sea temperature around Castries in October is 29°C.

Does it rain in Castries in October?

There are usually 18 days with some rain in Castries in October and the average monthly rainfall is 269mm.

What is the chance of a hurricane in Castries in October?

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

Castries October sunrise & sunset times

Browse the sunrise and sunset times for Castries in October 2025. Select a month to view Castries sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:54 17:53
Thursday, 16th October 2025 05:55 17:44
Friday, 31st October 2025 05:59 17:36

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