French Guiana weather in April 2025

Expect 86°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in French Guiana in April. Check more long-term weather averages for French Guiana in April before you book your next holiday to French Guiana in 2025/2026.

86
86°F max day temperature
5
5 hours of sunshine per day
21
21 days with some rainfall
75
75°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
17.3
17.3 inches of monthly rainfall
11
11+ (Extreme) UV index
81
81°F sea temperature

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The April 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) | Imperial (°F)

How hot is it in French Guiana in April?

Daytime temperatures usually reach 86°F in Cayenne, French Guiana in April with high heat and humidity, falling to 75°F at night.

How sunny is it in French Guiana in April?

There are normally 5 hours of bright sunshine each day in Cayenne, French Guiana in April - that's 41% of daylight hours.

How warm is the sea around French Guiana in April?

The average sea temperature around Cayenne, French Guiana in April is 81°F.

Does it rain in French Guiana in April?

There are usually 21 days with some rain in Cayenne, French Guiana in April and the average monthly rainfall is 17.3 inches.

French Guiana April sunrise & sunset times

Browse the sunrise and sunset times for French Guiana in April 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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