French Guiana weather live forecast

Today's maximum temperature in French Guiana is expected to be 27°C. Select a day from the live weather forecast for French Guiana (Cayenne) for more weather parameters.

Friday
12th Dec
27

26

3

10
Saturday
13th Dec
26

26

3

6
Sunday
14th Dec
27

26

3

4
Monday
15th Dec
26

26

2

5
Tuesday
16th Dec
26

25

1

8

5-day weather forecast updated at 04:00 on Friday 12th 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 Friday 12th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 3 hours of bright sunshine. There are 40-50 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 14 kph from the east.

27
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
10
UV index (Very High)
72
% chance of some rain
<50
mm of rainfall expected
L
low heat & humidity
14
kph wind from E

French Guiana weather for Saturday 13th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 50 mm or more of rainfall expected with 99% chance of some rain and a gentle breeze of 13 kph from the east.

26
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
99
% chance of some rain
>50
mm or more of rainfall expected
L
low heat & humidity
13
kph wind from E

French Guiana weather for Sunday 14th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 40-50 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 13 kph from the east.

27
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
79
% chance of some rain
<50
mm of rainfall expected
L
low heat & humidity
13
kph wind from E

French Guiana weather for Monday 15th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 95% chance of some rain and a light breeze of 11 kph from the east.

26
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
5
UV index (Moderate)
95
% chance of some rain
<30
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

French Guiana weather for Tuesday 16th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 98% chance of some rain and a light breeze of 11 kph from the east.