French Guiana weather

Usually in August
- 32
- 22
- 8
Weather by month
Now Today
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5-day forecast

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

The weather for French Guiana, represented by Cayenne, shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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

Compare French Guiana weather with the USA

Below the French Guiana weather chart shows average maximum daytime temperature for French Guiana (Cayenne) and the USA (Washington).

Maximum daytime temperature (°C)

French Guiana (Cayenne)

USA (Washington)

Jan

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May

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Aug

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Dec

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

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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.