Weather in September
Sea temperature
In September, the average sea temperature in La Seyne-sur-Mer, France, is 21.8°C (71.2°F).Note: Swimming in water at 21.8°C (71.2°F) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in La Seyne-sur-Mer is 12h and 30min.On the first day of the month, sunrise is at 07:01 and sunset at 20:11. On the last day of September, sunrise is at 07:33 and sunset at 19:19 CEST.
Frequently asked questions
What is the sea water temperature in September in La Seyne-sur-Mer?
In La Seyne-sur-Mer, France, in September, the average water temperature is 21.8°C (71.2°F). For swimming, a surface water temperature of 21.8°C (71.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
How many hours of daylight does La Seyne-sur-Mer have in September?
In La Seyne-sur-Mer, the average day length in September is 12h and 30min.
What time are sunrise and sunset in September in La Seyne-sur-Mer?
In September, on the first day of the month, sunrise is at 07:01 and sunset at 20:11. On the last day of the month, in La Seyne-sur-Mer, France, sunrise is at 07:33 and sunset at 19:19 CEST.
Average sea temperature in September
La Seyne-sur-Mer, France
- Average sea temperature in September: 21.8°C
The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in September
La Seyne-sur-Mer, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
La Seyne-sur-Mer, France
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