Weather in Cayenne in September

Cayenne, French Guiana averages a high of 31.2°C (88.2°F) and low of 24.2°C (75.6°F) in September, with 11 rain days and 11.2 hours of daily sunshine. Travel score: 81.1/100 (Excellent). The best time to visit Cayenne is September.

High
31°C88°F
Low
24°C76°F
🌧️
11
rain days
☀️
11.2
hrs/day sunshine
💧
78%
humidity
81— Excellent

September in Cayenne is hot and occasionally wet — excellent conditions for exploring.

JanFebMarAprMayJunJulAugSepOctNovDec

What are the average temperatures in Cayenne?

JanFebMarAprMayJunJulAugSep31°24°OctNovDec

How much does it rain in Cayenne in September?

Cayenne receives an average of 56.7mm of rainfall across 11 rainy days in September. The annual total is 2795.5mm.

JanFebMarAprMayJunJulAugSep11dOctNovDec

What should I pack for Cayenne in September?

Essentials

👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 31°C
🧢
Sun hat or cap
Protection from intense sun
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun

Traveling to French Guiana in September?

Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.

View French Guiana Holidays 2026Long Weekends Calendar

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Compare Cayenne

How can I plan my trip to Cayenne?

Best Time to Visit French Guiana

See the best months for travel across all cities →

Where Is Hot in September?

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What is the weather like in other months in Cayenne?

January
28°
25 rain days
65
February
28°
21 rain days
64
March
28°
23 rain days
66
April
28°
24 rain days
64
May
28°
28 rain days
63
June
28°
28 rain days
65
July
29°
26 rain days
67
August
30°
18 rain days
71
October
31°
12 rain days
80
November
30°
19 rain days
69
December
28°
26 rain days
65

Data based on 1994–2024 averages · Last updated: 2024-12-31