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.

Sunday
28th Dec
29

26

4

8
Monday
29th Dec
30

25

5

10
Tuesday
30th Dec
30

26

5

10
Wednesday
31st Dec
29

26

5

10
Thursday
1st Jan
27

25

2

11

5-day weather forecast updated at 04:00 on Saturday 27th 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 Sunday 28th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 20-30 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 13 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
72
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from E

French Guiana weather for Monday 29th 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 15 kph from the north-east.

30
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
60
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from NE

French Guiana weather for Tuesday 30th December 2025

Expect broken clouds in French Guiana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the east.

30
°C maximum temperature
26
°C minimum temperature
broken clouds
5
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from E

French Guiana weather for Wednesday 31st December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 13 kph from the north-east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
10
UV index (Very High)
68
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from NE

French Guiana weather for Thursday 1st January 2026

Expect isolated thunderstorms in French Guiana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 81% chance of some rain and a light breeze of 8 kph from the north-east.