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French Guiana weather in September 2024
Expect 32°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in French Guiana in September. Check more long-term weather averages for French Guiana in September before you book your next holiday to French Guiana in 2024/2025.
- 3232°C max day temperature
- 44 days with some rainfall
- 2323°C min night temperature
- 1212 hours of daylight per day
- VHVery High heat & humidity
- 4040 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2828°C sea temperature
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The September weather guide for French Guiana, represented by Cayenne, (Cayenne) 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)
How hot is it in French Guiana in September?
Daytime temperatures usually reach 32°C in Cayenne, French Guiana in September with very high heat and humidity, falling to 23°C at night.
How sunny is it in French Guiana in September?
There are normally 8 hours of bright sunshine each day in Cayenne, French Guiana in September - that's 68% of daylight hours.
How warm is the sea around French Guiana in September?
The average sea temperature around Cayenne, French Guiana in September is 28°C.
Does it rain in French Guiana in September?
There are usually 4 days with some rain in Cayenne, French Guiana in September and the average monthly rainfall is 40mm.
French Guiana September sunrise & sunset times
Browse the sunrise and sunset times for French Guiana in September 2024. Select a month to view French Guiana sunrise and sunset times for the next 12 months. The French Guiana sunrise and sunset times shown below are for Cayenne.
|Sunday, 1st September 2024
|Sunday, 15th September 2024
|Monday, 30th September 2024
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