La Grande-Motte Weather in September
What's the weather like in La Grande-Motte (Languedoc-Roussillon) in September 2025?
The climate in La Grande-Motte during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in La Grande-Motte and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (78°F), whilst at night 15°C (58°F) is normal.
| Daytime temperature | 25.4°C 77.6°F |
|---|---|
| Nightly temperature | 14.7°C 58.4°F |
| Average temperature | 20°C 68°F |
| Daily sunshine | 8.3 hrs |
| Avg rainfall | 75 mm 3 ins |
| Rainy days | 7 days |
| Sea temperature | 20.7°C 69.3°F |
| Humidity | 67% |
| Windspeed | 12.2kph 8 mph |
On average September is the 2nd wettest month of the year in La Grande-Motte with around 75mm 3 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 8.3 hours of sunshine per day.
September temperatures in La Grande-Motte
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 La Grande-Motte in September 2025.
Other monthly averages
Best places to visit in September
La Grande-Motte weather stats
| Hottest month: | July | 29.3°C 84.7°F |
|---|---|---|
| Driest month: | July | 22mm 0.9ins |
| Sunniest month: | July | 11.8hrs |
| Coldest month: | January | 10.7°C 51.3°F |
| Wettest month: | October | 124mm 4.9ins |
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