French Guiana weather in September 2020

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  • 32°C maximum daytime temperature in September in French Guiana (Cayenne)32
    32°C max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in September in French Guiana (Cayenne)4
    4 days with some rainfall
  • 23°C minimum night-time temperature in September in French Guiana (Cayenne)23
    23°C min night temperature
  • 12 hours of daylight per day in September in French Guiana (Cayenne)12
    12 hours of daylight per day
  • Very high heat & humidity in September in French Guiana (Cayenne)VH
    Very High heat & humidity
  • 40 mm monthly rainfall in September in French Guiana (Cayenne)40
    40 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in French Guiana (Cayenne)11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in French Guiana (Cayenne)28
    28°C sea temperature
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The September weather guide for French Guiana 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.

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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 sunrise & sunset times for September 2020

Browse the sunrise & sunset times for French Guiana in September 2020. Select a month to view French Guiana sunrise & sunset times for the next twelve months. The French Guiana sunrise & sunset times shown below are for Cayenne.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2020 06:23 18:35
Tuesday, 15th September 2020 06:20 18:28
Wednesday, 30th September 2020 06:17 18:21
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Metric (°C / mm)  |  Imperial (°F / inches)

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