French Guiana weather in June 2025

Q: How hot is it in French Guiana in June?

Daytime temperatures usually reach 30°C in Cayenne, French Guiana in June with very high heat and humidity, falling to 23°C at night.

Q: How sunny is it in French Guiana in June?

There are normally 5 hours of bright sunshine each day in Cayenne, French Guiana in June - that's 43% of daylight hours.

Q: How warm is the sea around French Guiana in June?

The average sea temperature around Cayenne, French Guiana in June is 28°C.

Q: Does it rain in French Guiana in June?

There are usually 23 days with some rain in Cayenne, French Guiana in June and the average monthly rainfall is 412mm.

Expect 30°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in French Guiana in June. Check more long-term weather averages for French Guiana in June before you book your next holiday to French Guiana in 2025/2026.

30
30°C max day temperature
5
5 hours of sunshine per day
23
23 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
412
412 mm of monthly rainfall
11
11+ (Extreme) UV index
28
28°C sea temperature

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The June weather guide for French Guiana, represented by Cayenne, (Cayenne) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How hot is it in French Guiana in June?

Daytime temperatures usually reach 30°C in Cayenne, French Guiana in June with very high heat and humidity, falling to 23°C at night.

How sunny is it in French Guiana in June?

There are normally 5 hours of bright sunshine each day in Cayenne, French Guiana in June - that's 43% of daylight hours.

How warm is the sea around French Guiana in June?

The average sea temperature around Cayenne, French Guiana in June is 28°C.

Does it rain in French Guiana in June?

There are usually 23 days with some rain in Cayenne, French Guiana in June and the average monthly rainfall is 412mm.

French Guiana June sunrise & sunset times

Browse the sunrise and sunset times for French Guiana in June 2025. Select a month to view French Guiana sunrise and sunset times for the next 12 months. The French Guiana sunrise and sunset times shown below are for Cayenne.

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