Weather in September
Sea temperature
In Saint-Jean-de-Luz, France, the average seawater temperature in September is 20.8°C (69.4°F).Note: The enjoyment of swimming decreases for most when the surface water temperature is 20.8°C (69.4°F). Breathing control becomes increasingly challenging as temperatures descend below 21°C (69.8°F).
Daylight
The average length of the day in September in Saint-Jean-de-Luz is 12h and 30min.On the first day of the month, sunrise is at 07:31 and sunset at 20:41. On the last day of September, in Saint-Jean-de-Luz, sunrise is at 08:03 and sunset at 19:49 CEST.
Frequently asked questions
How cold is the water in September in Saint-Jean-de-Luz?
In September, the average sea temperature in Saint-Jean-de-Luz, France, is 20.8°C (69.4°F). For swimming, a surface water temperature of 20.8°C (69.4°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).
What is the average length of the day in September in Saint-Jean-de-Luz?
The average day length in September in Saint-Jean-de-Luz is 12h and 30min.
What time are sunrise and sunset in September in Saint-Jean-de-Luz?
On the first day of September in Saint-Jean-de-Luz, sunrise is at 07:31 and sunset at 20:41. On the last day of the month, sunrise is at 08:03 and sunset at 19:49 CEST.
Average sea temperature in September
Saint-Jean-de-Luz, France
- Average sea temperature in September: 20.8°C
The best month for swimming (with the highest average sea temperature) is August (21.4°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).
Average daylight in September
Saint-Jean-de-Luz, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
Saint-Jean-de-Luz, France
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
