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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 77–80°F, 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 77–80°F, 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 80–82°F, 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 77–78°F, 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. 79.3°F / Annual rainfall: approx. 115 mm / Summer humidity: 70-85% / Rainiest month: May

French Guiana monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
77.7°F
6.4
February
78.6°F
3.4
March
79.9°F
6.3
April
78.8°F
11.8
May
78.3°F
23.4
June
77.9°F
17.9
July
78.4°F
15.5
August
80.2°F
5.4
September
82°F
1.8
October
82°F
3.9
November
81°F
6.5
December
77.4°F
13.1
French Guiana weather for the next seven days
10/12
Sunday
Partly Cloudy
97.6°F/67.3°F
10/13
Monday
Partly Cloudy
99.3°F/66.2°F
10/14
Tuesday
Patchy rain nearby
99.1°F/68.7°F
10/15
Wednesday
Partly Cloudy
99°F/69.3°F
10/16
Thursday
Partly Cloudy
98.6°F/71°F
10/17
Friday
Patchy rain nearby
94.9°F/71°F
10/18
Saturday
Patchy rain nearby
92.2°F/70.9°F