French Guiana weather live forecast

Today's maximum temperature in French Guiana is expected to be 30°C. Select a day from the live weather forecast for French Guiana (Cayenne) for more weather parameters.

Saturday
6th Dec
30

26

6

10
Sunday
7th Dec
28

27

4

8
Monday
8th Dec
28

26

4

9
Tuesday
9th Dec
28

26

4

7
Wednesday
10th Dec
28

27

3

11

5-day weather forecast updated at 04:00 on Saturday 6th December 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 Saturday 6th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 32% chance of some rain and a gentle breeze of 14 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
10
UV index (Very High)
32
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from E

French Guiana weather for Sunday 7th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 77% chance of some rain and a light breeze of 12 kph from the east.

28
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
77
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
12
kph wind from E

French Guiana weather for Monday 8th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 20-30 mm of rainfall expected with 80% chance of some rain and a light breeze of 12 kph from the north-east.

28
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
80
% chance of some rain
<30
mm of rainfall expected
L
low heat & humidity
12
kph wind from NE

French Guiana weather for Tuesday 9th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 75% chance of some rain and a light breeze of 12 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
75
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from E

French Guiana weather for Wednesday 10th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 96% chance of some rain and a gentle breeze of 13 kph from the east.