Cayenne Weather Year-Round — Best Time to Visit
Cayenne, French Guiana has hot weather year-round. The best time to visit is September (score: 81/100). Annual average high: 28.9°C, total rainfall: 2796mm.
When is the best time to visit Cayenne?
81
September is the best month to visit Cayenne with a travel score of 81/100 (Excellent).
Expect highs of 31.2°C, 11 rain days, and 11.2 hours of daily sunshine.
View September weather details →Travel Score by Month
65
Jan
64
Feb
66
Mar
64
Apr
63
May
65
Jun
67
Jul
71
Aug
81
Sep
80
Oct
69
Nov
65
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Cayenne each month?
28.9°C
Avg High
23.7°C
Avg Low
2796mm
Annual Rain
How much rain does Cayenne get?
Cayenne receives 2796mm of rain annually. The wettest month is typically May with 434mm, while September is the driest.
What is the weather like each month in Cayenne?
January
65
28°C
Low: 23°C
25 rain days
Good
February
64
28°C
Low: 24°C
21 rain days
Good
March
66
28°C
Low: 24°C
23 rain days
Good
April
64
28°C
Low: 24°C
24 rain days
Good
May
63
28°C
Low: 24°C
28 rain days
Good
June
65
28°C
Low: 23°C
28 rain days
Good
July
67
29°C
Low: 23°C
26 rain days
Good
August
71
30°C
Low: 24°C
18 rain days
Good
September
Best time to visit81
31°C
Low: 24°C
11 rain days
Excellent
October
80
31°C
Low: 24°C
12 rain days
Good
November
69
30°C
Low: 24°C
19 rain days
Good
December
65
28°C
Low: 24°C
26 rain days
Good
Compare Cayenne
Planning a Trip to French Guiana?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31