Apatou Weather in September
What's the weather like in Apatou (Guyane) in September 2025?
The climate in Apatou during September can be summarized as hot and a little damp.
September is in the fall / autumn in Apatou and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 33°C (91°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 33°C 91.3°F |
|---|---|
| Nightly temperature | 22.1°C 71.7°F |
| Average temperature | 27.5°C 81.5°F |
| Daily sunshine | 8.9 hrs |
| Avg rainfall | 97 mm 3.8 ins |
| Rainy days | 8 days |
| Sea temperature | 28.2°C 82.8°F |
| Humidity | 60% |
| Windspeed | 4.3kph 3 mph |
On average September is the 2nd driest month of the year in Apatou with around 97mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.9 hours of sunshine per day.
September temperatures in Apatou
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Apatou in September 2025.
Other monthly averages
Best places to visit in September
Apatou weather stats
| Hottest month: | September | 32.7°C 90.9°F |
|---|---|---|
| Driest month: | October | 91mm 3.6ins |
| Sunniest month: | September | 8.9hrs |
| Coldest month: | January | 29.4°C 84.9°F |
| Wettest month: | May | 343mm 13.5ins |
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