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French Guiana

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French Guiana Weather and climate

Data source:Meteostat
Update date:2025-10

French Guiana year round climate
  • Spring (March-May): Average 25–27°C, warm climate with higher humidity. This is a season with relatively more rainfall throughout the year, with slightly higher rainfall in May. Nevertheless, overall rainfall remains at low levels. Common activities: Exploring indoor attractions, cultural sites, or outdoor activities during cooler periods. Recommended attire: Light, breathable clothing, rain gear (for occasional showers).
  • Summer (June-August): Average 25–27°C, hot and humid weather. Rainfall is moderate in June and July, starting to turn dry in August. Common activities: Beach activities, water sports, exploring national parks (heat protection necessary). Recommended attire: Light, loose clothing, sun protection, hats, sunglasses.
  • Autumn (September-November): Average 27–28°C, the hottest and driest period of the year. Rainfall is extremely low, especially in September, which is the driest month of the year. Common activities: Excellent for outdoor adventures, hiking, and wildlife viewing, as there is minimal rain disruption. Recommended attire: Extremely light and breathable summer clothing, with enhanced sun protection.
  • Winter (December-February): Average 25–26°C, relatively lower temperatures but still warm. High humidity, moderate rainfall in December, followed by drier conditions. Common activities: Enjoying the warm and pleasant weather, participating in local festivals, river tours. Recommended attire: Light summer clothing.
French Guiana climatological average

Annual average temperature: approx. 26.3°C / Annual rainfall: approx. 115 mm / Summer humidity: 70-85% / Rainiest month: May

French Guiana monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
25.4°C
6.4
February
25.9°C
3.4
March
26.6°C
6.3
April
26°C
11.8
May
25.7°C
23.4
June
25.5°C
17.9
July
25.8°C
15.5
August
26.8°C
5.4
September
27.8°C
1.8
October
27.8°C
3.9
November
27.2°C
6.5
December
25.2°C
13.1
French Guiana weather for the next seven days
10/12
Sunday
Partly Cloudy
36.1°C/19.6°C
10/13
Monday
Partly Cloudy
37.4°C/19.7°C
10/14
Tuesday
Patchy rain nearby
36.9°C/21.5°C
10/15
Wednesday
Partly Cloudy
37.2°C/20.7°C
10/16
Thursday
Sunny
37.1°C/21.5°C
10/17
Friday
Patchy rain nearby
34.8°C/21.8°C
10/18
Saturday
Patchy rain nearby
34.9°C/21.5°C