Grand Baie weather in September 2025

Expect 26°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Grand Baie in September. Check more long-term weather averages for Grand Baie in September before you book your next holiday to Mauritius in 2025/2026.

  • 26°C maximum daytime temperature in September in Grand Baie26
    26°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in September in Grand Baie12
    12 days with some rainfall
  • 17°C minimum night-time temperature in September in Grand Baie17
    17°C min night temperature
  • 12 hours of daylight per day in September in Grand Baie12
    12 hours of daylight per day
  • Low heat & humidity in September in Grand BaieL
    Low heat & humidity
  • 54 mm monthly rainfall in September in Grand Baie54
    54 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Grand Baie10
    10 (Very High) UV index
  • 23°C sea temperature in September in Grand Baie23
    23°C sea temperature

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The September weather guide for Mauritius (Grand Baie) 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 Mauritius

How hot is it in Grand Baie in September?

Daytime temperatures usually reach 26°C in Grand Baie in September with low heat and humidity, falling to 17°C at night.

How sunny is it in Grand Baie in September?

There are normally 7 hours of bright sunshine each day in Grand Baie in September - that's 60% of daylight hours.

How warm is the sea around Grand Baie in September?

The average sea temperature around Grand Baie in September is 23°C.

Does it rain in Grand Baie in September?

There are usually 12 days with some rain in Grand Baie in September and the average monthly rainfall is 54mm.

Grand Baie September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:18 18:01
Monday, 15th September 2025 06:06 18:04
Tuesday, 30th September 2025 05:52 18:08

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