French Guiana weather live forecast

Today's maximum temperature in French Guiana is expected to be 86°F. Select a day from the live weather forecast for French Guiana (Cayenne) for more weather parameters.

Wednesday
8th Oct
86

79

6

11
Thursday
9th Oct
84

79

5

11
Friday
10th Oct
86

79

6

9
Saturday
11th Oct
86

79

6

11
Sunday
12th Oct
88

77

7

11

5-day weather forecast updated at 04:00 on Wednesday 8th October 2025 GMT

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The 5-day weather forecast for French Guiana, represented by Cayenne, (Cayenne) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

French Guiana weather forecast by day

Below are the detailed weather forecasts for French Guiana for the next 5 days. The forecasts shown are for Cayenne and may not represent the whole of French Guiana. Browse more destinations in French Guiana to view more weather forecasts.

French Guiana weather for Wednesday 8th October 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 39% chance of some rain and a gentle breeze of 10 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
39
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
10
mph wind from E

French Guiana weather for Thursday 9th October 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 9 mph from the east.

84
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
11
UV index (Extreme)
54
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
mph wind from E

French Guiana weather for Friday 10th October 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 8 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
58
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
8
mph wind from E

French Guiana weather for Saturday 11th October 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 8 mph from the east.

86
°F maximum temperature
79
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
51
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
8
mph wind from E

French Guiana weather for Sunday 12th October 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 8 mph from the east.