Cayenne
French Guiana
Long term weather forecast
Long term weather forecast

Monthly weather forecast and Climate
Cayenne, French Guiana

Month with highest number of rainy days is May (26.4 days).
Month with lowest number of rainy days is September (7.1 days).

Best months for swimming (with highest average sea temperature) are May, June, July, August, September, October and November (82°F).
Coldest months (with lowest average sea temperature) are January, February, March, April and December (81°F).

Months with longest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12).
Months with shortest days are January, February, March, April, May, June, July, August, September, October, November and December (Average daylight: 12).

Month with most sunshine is September (Average sunshine: 8.5).
Month with least sunshine is January (Average sunshine: 3).

Months with highest UV index are January, February, March, April, May, June, August, September, October and November (UV index 12).
Months with lowest UV index are July and December (UV index 11).

englishespañol