Vieux Fort weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Vieux Fort in September. Check more long-term weather averages for Vieux Fort in September before you book your next holiday to St Lucia in 2025/2026.

  • 30°C maximum daytime temperature in September in Vieux Fort30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 23 days with some rainfall in September in Vieux Fort23
    23 days with some rainfall
  • 24°C minimum night-time temperature in September in Vieux Fort24
    24°C min night temperature
  • 12 hours of daylight per day in September in Vieux Fort12
    12 hours of daylight per day
  • Very high heat & humidity in September in Vieux FortVH
    Very High heat & humidity
  • 267 mm monthly rainfall in September in Vieux Fort267
    267 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Vieux Fort11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Vieux Fort29
    29°C sea temperature

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The September weather guide for St Lucia (Vieux Fort) 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 Vieux Fort in September?

Daytime temperatures usually reach 30°C in Vieux Fort in September with very high heat and humidity, falling to 24°C at night.

How sunny is it in Vieux Fort in September?

There are normally 7 hours of bright sunshine each day in Vieux Fort in September - that's 61% of daylight hours.

How warm is the sea around Vieux Fort in September?

The average sea temperature around Vieux Fort in September is 29°C.

Does it rain in Vieux Fort in September?

There are usually 23 days with some rain in Vieux Fort in September and the average monthly rainfall is 267mm.

What is the chance of a hurricane in Vieux Fort in September?

On average 1 day in September in Vieux Fort is likely to be affected by the passage of one or more tropical storms.

Vieux Fort September sunrise & sunset times

Browse the sunrise and sunset times for Vieux Fort in September 2025. Select a month to view Vieux Fort sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:52 18:15
Monday, 15th September 2025 05:53 18:05
Tuesday, 30th September 2025 05:53 17:54

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