French Guiana weather live forecast

Today's maximum temperature in French Guiana is expected to be 29°C. Select a day from the live weather forecast for French Guiana (Cayenne) for more weather parameters.

Monday
11th Aug
29

25

8

11
Tuesday
12th Aug
31

25

6

11
Wednesday
13th Aug
30

25

6

9
Thursday
14th Aug
31

25

6

11
Friday
15th Aug
30

25

7

11

5-day weather forecast updated at 04:00 on Sunday 10th August 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 Monday 11th August 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a light breeze of 7 kph from the north.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
11
UV index (Extreme)
39
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from N

French Guiana weather for Tuesday 12th August 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a light breeze of 8 kph from the north-east.

31
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
44
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from NE

French Guiana weather for Wednesday 13th August 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 30°C, 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 69% chance of some rain and a light breeze of 8 kph from the east.

30
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
9
UV index (Very High)
69
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from E

French Guiana weather for Thursday 14th August 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 31°C, 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 68% chance of some rain and a light breeze of 10 kph from the south-east.

31
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
11
UV index (Extreme)
68
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from SE

French Guiana weather for Friday 15th August 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 30°C, 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 62% chance of some rain and a light breeze of 10 kph from the east.