September is the hottest month in Cayenne with an average temperature of 28°C (82°F) and the coldest is January at 26°C (79°F) with the most daily sunshine hours at 8 in October. The wettest month is May with an average of 544mm of rain. The best month to swim in the sea is in April when the average sea temperature is 28°C (82°F).
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Sunrise 06:19
Sunset 18:12
Sunrise 06:19
Sunset 18:12