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.

Tuesday
16th Dec
27

25

2

6
Wednesday
17th Dec
28

25

3

8
Thursday
18th Dec
28

25

3

9
Friday
19th Dec
26

25

3

8
Saturday
20th Dec
27

25

3

3

5-day weather forecast updated at 04:00 on Tuesday 16th 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

International Drivers Association: Driving permit plans from £37

Deal

Check out International driving permit plans from only £37
Choose from print + digital & digtial only permits
Valid for up to 3 years & use in over 150 countries

Go to International Drivers Association deal >>

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 Tuesday 16th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 91% chance of some rain and a light breeze of 11 kph from the east.

27
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
91
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

French Guiana weather for Wednesday 17th 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 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 76% chance of some rain and a light breeze of 11 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
76
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
11
kph wind from NE

French Guiana weather for Thursday 18th 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 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 67% chance of some rain and a light breeze of 12 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
9
UV index (Very High)
67
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
12
kph wind from NE

French Guiana weather for Friday 19th 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 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 85% chance of some rain and a light breeze of 10 kph from the east.

26
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
8
UV index (Very High)
85
% chance of some rain
<20
mm of rainfall expected
L
low heat & humidity
10
kph wind from E

French Guiana weather for Saturday 20th December 2025

Expect isolated thunderstorms in French Guiana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a light breeze of 10 kph from the east.