The temperatures in Vannes in September are usually low and can range between 13°C and 20°C.
You can expect about 3 to 8 days of rain in Vannes 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 Vannes in September 2026.
If you’re planning to visit Vannes in the near future, we highly recommend that you review the 14 day weather forecast for Vannes before you arrive.
Temperatures
20° / 13°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
52
mm
Sun Hours
10.5
Hrs
