Grenada weather in September 2025

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

  • 30°C maximum daytime temperature in September in Grenada (St George's)30
    30°C max day temperature
  • 7 hours of sunshine per day
  • 17 days with some rainfall in September in Grenada (St George's)17
    17 days with some rainfall
  • 23°C minimum night-time temperature in September in Grenada (St George's)23
    23°C min night temperature
  • 12 hours of daylight per day in September in Grenada (St George's)12
    12 hours of daylight per day
  • High heat & humidity in September in Grenada (St George's)H
    High heat & humidity
  • 186 mm monthly rainfall in September in Grenada (St George's)186
    186 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Grenada (St George's)11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Grenada (St George's)29
    29°C sea temperature

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The September weather guide for Grenada (St George's) 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 Grenada destinations

Below are average maximum temperatures at popular countries, regions and places in Grenada in September. Select a holiday destination to see more weather parameters.

All Grenada destinations

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

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More about Grenada

How hot is it in Grenada in September?

Daytime temperatures usually reach 30°C in St George's, Grenada in September with high heat and humidity, falling to 23°C at night.

How sunny is it in Grenada in September?

There are normally 7 hours of bright sunshine each day in St George's, Grenada in September - that's 60% of daylight hours.

How warm is the sea around Grenada in September?

The average sea temperature around St George's, Grenada in September is 29°C.

Does it rain in Grenada in September?

There are usually 17 days with some rain in St George's, Grenada in September and the average monthly rainfall is 186mm.

What is the chance of a hurricane in Grenada in September?

On average less than 1 day in September in St George's, Grenada is likely to be affected by the passage of one or more tropical storms.

Grenada September sunrise & sunset times

Browse the sunrise and sunset times for Grenada in September 2025. Select a month to view Grenada sunrise and sunset times for the next 12 months. The Grenada sunrise and sunset times shown below are for St George's.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:57 18:17
Monday, 15th September 2025 05:56 18:08
Tuesday, 30th September 2025 05:56 17:57

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