The climate in Port-de-Bouc during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Port-de-Bouc and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (76°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 24.6°C 76.3°F | 
|---|---|
| Nightly temperature | 14.6°C 58.3°F | 
| Average temperature | 19.6°C 67.3°F | 
| Daily sunshine | 8.7 hrs | 
| Avg rainfall | 70 mm 2.8 ins | 
| Rainy days | 7 days | 
| Sea temperature | 20.7°C 69.3°F | 
| Humidity | 69% | 
| Windspeed | 13kph 8 mph | 
On average September is the 2nd wettest month of the year in Port-de-Bouc with around 70mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
 
				 
						 
						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 Port-de-Bouc in September 2025.
Best places to visit in September
| Hottest month: | July | 28.7°C 83.7°F | 
|---|---|---|
| Driest month: | July | 15mm 0.6ins | 
| Sunniest month: | July | 12.4hrs | 
| Coldest month: | January | 10.1°C 50.2°F | 
| Wettest month: | October | 90mm 3.5ins | 
 
	 
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