Fort-de-France weather in September 2025

Expect daytime maximum temperatures of 30°C in Fort-de-France, Martinique in September and high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 28 days with some rainfall and typically 233 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Fort-de-France30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 28 days with some rainfall in September in Fort-de-France28
    28 days with some rainfall
  • 24°C minimum night-time temperature in September in Fort-de-France24
    24°C min night temperature
  • 12 hours of daylight per day in September in Fort-de-France12
    12 hours of daylight per day
  • High heat & humidity in September in Fort-de-FranceH
    High heat & humidity
  • 233 mm monthly rainfall in September in Fort-de-France233
    233 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Fort-de-France11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Fort-de-France29
    29°C sea temperature

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The September weather guide for Martinique (Fort-de-France) 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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How hot is it in Fort-de-France in September?

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

How sunny is it in Fort-de-France in September?

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

How warm is the sea around Fort-de-France in September?

The average sea temperature around Fort-de-France in September is 29°C.

Does it rain in Fort-de-France in September?

There are usually 28 days with some rain in Fort-de-France in September and the average monthly rainfall is 233mm.

What is the chance of a hurricane in Fort-de-France in September?

On average 1.2 days in September in Fort-de-France are likely to be affected by the passage of one or more tropical storms.

Fort-de-France September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:52 18:16
Monday, 15th September 2025 05:53 18:05
Tuesday, 30th September 2025 05:54 17:54

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