French Guiana weather averages

Usually in September
- 32
- 23
- 8
Weather by month
Now Today
- 34
- 6
5-day forecast

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

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

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 34°C, while the average maximum temperature in September is 32°C. The holiday weather guide shown above is for Cayenne.

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More about French Guiana

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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

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.

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.