French Guiana weather live forecast

Today's maximum temperature in French Guiana is expected to be 28°C. Select a day from the live weather forecast for French Guiana (Cayenne) for more weather parameters.

Thursday
25th Dec
28

23

3

5
Friday
26th Dec
30

25

6

8
Saturday
27th Dec
29

25

4

7
Sunday
28th Dec
28

25

4

6
Monday
29th Dec
29

25

3

11

5-day weather forecast updated at 04:00 on Thursday 25th December 2025 GMT

More about French Guiana

French Guiana by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for French Guiana

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 Thursday 25th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 66% chance of some rain and a light breeze of 8 kph from the north-east.

28
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
5
UV index (Moderate)
66
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from NE

French Guiana weather for Friday 26th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 47% chance of some rain and a light breeze of 10 kph from the north-east.

30
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
47
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from NE

French Guiana weather for Saturday 27th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 78% chance of some rain and a light breeze of 10 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
78
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

French Guiana weather for Sunday 28th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and a light breeze of 12 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
6
UV index (High)
85
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
12
kph wind from E

French Guiana weather for Monday 29th December 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 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a light breeze of 12 kph from the east.