The temperatures in Concarneau in September are usually low and can range between 14°C and 19°C.
You can expect about 3 to 8 days of rain in Concarneau during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Concarneau in September 2026.
If you’re planning to visit Concarneau in the near future, we highly recommend that you review the 14 day weather forecast for Concarneau before you arrive.
Temperatures
19° / 14°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
52
mm
Sun Hours
10.5
Hrs
