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.

Thursday
28th May
29

26

3

10
Friday
29th May
28

26

5

8
Saturday
30th May
28

25

2

6
Sunday
31st May
28

26

1

7
Monday
1st Jun
28

26

1

2

5-day weather forecast updated at 04:00 on Thursday 28th May 2026 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 Thursday 28th May 2026

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 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 67% chance of some rain and a light breeze of 10 kph from the east.

29
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
10
UV index (Very High)
67
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

French Guiana weather for Friday 29th May 2026

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 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a light breeze of 9 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
79
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
9
kph wind from E

French Guiana weather for Saturday 30th May 2026

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 6 (High) 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 10 kph from the east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
95
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

French Guiana weather for Sunday 31st May 2026

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 1 hour of bright sunshine. There are 20-30 mm of rainfall expected with 91% chance of some rain and a light breeze of 10 kph from the east.

28
°C maximum temperature
26
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
7
UV index (High)
91
% chance of some rain
<30
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from E

French Guiana weather for Monday 1st June 2026

Expect isolated thunderstorms in French Guiana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 93% chance of some rain and a light breeze of 9 kph from the east.