St George's weather in September 2025

Q: How hot is it in St George's in September?

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

Q: How sunny is it in St George's in September?

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

Q: How warm is the sea around St George's in September?

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

Q: Does it rain in St George's in September?

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

Q: What is the chance of a cyclone in St George's in September?

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

Expect 86°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in St George's in September. Check more long-term weather averages for St George's in September before you book your next holiday to Grenada in 2025/2026.

86
86°F max day temperature
7
7 hours of sunshine per day
17
17 days with some rainfall
73
73°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
7.3
7.3 inches of monthly rainfall
11
11+ (Extreme) UV index
84
84°F 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.

Metric (°C) | Imperial (°F)

More about Grenada

How hot is it in St George's in September?

Daytime temperatures usually reach 86°F in St George's in September with high heat and humidity, falling to 73°F at night.

How sunny is it in St George's in September?

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

How warm is the sea around St George's in September?

The average sea temperature around St George's in September is 84°F.

Does it rain in St George's in September?

There are usually 17 days with some rain in St George's in September and the average monthly rainfall is 7.3 inches.

What is the chance of a hurricane in St George's in September?

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

St George's September sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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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Grenada - quick facts
Flight time^✝	11 hours
Time difference	UK -4 hours
Language(s)	English
Currency	Eastern Caribbean Dollar
Electricity	G plug (230V)
Driving side	Left
Why visit?	Beaches Nature
Tourist info	Grenada Tourism Authority