La Seyne-sur-Mer Weather in September
What's the weather like in La Seyne-sur-Mer (Provence-Alpes-Côte d'Azur) in September 2025?
The climate in La Seyne-sur-Mer during September can be summarized as warm, humid and reasonably dry.
September is in the fall / autumn in La Seyne-sur-Mer and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 25°C (77°F), whilst at night 16°C (61°F) is normal.
| Daytime temperature | 25°C 76.9°F |
|---|---|
| Nightly temperature | 16.1°C 60.9°F |
| Average temperature | 20.5°C 68.9°F |
| Daily sunshine | 9.2 hrs |
| Avg rainfall | 65 mm 2.6 ins |
| Rainy days | 6 days |
| Sea temperature | 21°C 69.8°F |
| Humidity | 71% |
| Windspeed | 14.4kph 9 mph |
On average September is the 5th wettest month of the year in La Seyne-sur-Mer with around 65mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.2 hours of sunshine per day.
September temperatures in La Seyne-sur-Mer
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 Seyne-sur-Mer in September 2025.
Other monthly averages
Best places to visit in September
La Seyne-sur-Mer weather stats
| Hottest month: | July | 28.2°C 82.8°F |
|---|---|---|
| Driest month: | July | 12mm 0.5ins |
| Sunniest month: | July | 12.8hrs |
| Coldest month: | January | 11.8°C 53.2°F |
| Wettest month: | November | 88mm 3.5ins |
© Google
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