French Guiana weather averages for holidays in 2017/2018

Check French Guiana weather averages before you book your next holiday in 2017/2018. Today's maximum temperature in French Guiana is expected to be 28°C, while the average maximum temperature in September is 32°C. The holiday weather guide shown below is for Cayenne.

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French Guiana weather averages

Check French Guiana weather averages before you book your next holiday. The warmest months in French Guiana are August, September and October with an average maximum temperature of 32°C. The sunniest months are August, September and October with on average 8 hours of bright sunshine per day. The months with the least number of days with some rain are September and October with 4 days. The sea is at its warmest in French Guiana in June, July, August, September, October and November with an average sea temperature of 28°C. The French Guiana weather averages shown below are for Cayenne.

Maximum daytime temperature (°C)

Hours of sunshine (daily)

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

Days with some rainfall

Sea temperature (°C)

More weather parameters

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

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French Guiana weather today

Here is the weather in French Guiana today, Monday 25th September 2017. Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, low levels of heat & humidity and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 58% chance of some rain and a light breeze of 12 kph from the east. The weather forecast shown below is for Cayenne.

  • 28
    °C maximum temperature
  • 19
    °C minimum temperature
  • isolated thunderstorms
  • 3
    hours of sunshine
  • 58
    % chance of some rain
  • <10
    mm of rainfall expected
  • L
    low heat & humidity
  • 12
    kph wind from E

5-day weather forecast

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.

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 holiday 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)

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

Compare more French Guiana weather >>

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