French Guiana climate guide: monthly weather averages

The French Guiana climate guides are perfect for planning your holiday. Monthly weather averages give the best indication of what the weather is usually like for every month of the year including figures for temperature, rainfall and sunshine. The climate guide shown below is for Cayenne.

Temperature in French Guiana
Rainfall in French Guiana
Sunshine in French Guiana
More climate in French Guiana

Temperature in French Guiana (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	29	29	29	30	29	30	31	32	32	32	31	30
Min temperature (night-time)	23	23	23	24	23	23	23	22	23	23	23	23
Sea temperature	27	27	27	27	27	28	28	28	28	28	28	27

Sunshine & Daylight in French Guiana

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	4	4	5	5	4	5	7	8	8	8	7	5
Daily hours of daylight	12	12	12	12	12	12	12	12	12	12	12	12

Rainfall in French Guiana

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	20	16	22	21	26	23	18	9	4	4	11	18
Average monthly rainfall (mm)	367	306	374	439	544	412	200	96	40	46	124	294

More climate for French Guiana

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV Index (Maximum)	11	11	11	11	11	11	11	11	11	11	11	11
Heat & Humidity	H	H	H	H	H	VH	VH	VH	VH	VH	VH	H

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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

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More about French Guiana

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French Guiana climate by month

Check French Guiana climate for a particular month by selecting from the list below. Monthly climate guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.