Roche-à-Bateau Weather in September
What's the weather like in Roche-à-Bateau (Sud) in September 2025?
The climate in Roche-à-Bateau during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Roche-à-Bateau and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 30.8°C 87.4°F |
|---|---|
| Nightly temperature | 21.7°C 71°F |
| Average temperature | 26.2°C 79.2°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 234 mm 9.2 ins |
| Rainy days | 14 days |
| Sea temperature | 29.4°C 84.9°F |
| Humidity | 78% |
| Windspeed | 9.7kph 6 mph |
On average September is the 3rd wettest month of the year in Roche-à-Bateau with around 234mm 9.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
September temperatures in Roche-à-Bateau
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 Roche-à-Bateau in September 2025.
Other monthly averages
Best places to visit in September
Roche-à-Bateau weather stats
| Hottest month: | August | 31°C 87.8°F |
|---|---|---|
| Driest month: | December | 76mm 3ins |
| Sunniest month: | February | 8hrs |
| Coldest month: | January | 27.7°C 81.9°F |
| Wettest month: | October | 422mm 16.6ins |
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