French Guiana weather averages

Going to French Guiana? Find the best month to visit French Guiana based on the weather.

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Check French Guiana weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in French Guiana is expected to be 28°C, while the average maximum temperature in May is 29°C. The holiday weather guide shown above is for Cayenne.

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

French Guiana weather averages: best month

French Guiana Best month Averages
Warmest August, September & October 32°C
Sunniest August, September & October 8 hours per day
Least rain September & October 4 days
Warmest sea June, July, August, September, October & November 28°C

French Guiana climate guide

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French Guiana weather overview

French Guiana is a small country in South America bordering Brazil and Suriname, with an Atlantic coastline at its northern edge. It consists largely of lowland plains with small hills to the south, and has an equatorial rainforest interior. Expect a climate of Turkish bath-style sultriness throughout the year, though conditions are at their most steamy during the rainy season, which stretches from December to mid-July.

Best time to visit is August and November, when conditions are driest and sunniest, and humidity not too oppressive.

What to pack for French Guiana weather

Take very light cotton clothing and reliable waterproofs if you are visiting in the long wet season. Add a wrap for cooler evenings.

French Guiana weather averages by month

Check French Guiana holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare French Guiana weather with the USA

Below the French Guiana weather chart shows maximum daytime temperature for French Guiana (Cayenne) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

French Guiana (Cayenne)
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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