The temperatures in Saint Nazaire in September are comfortable with low of 13°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Saint Nazaire 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 Saint Nazaire in September 2026.
If you’re planning to visit Saint Nazaire in the near future, we highly recommend that you review the 14 day weather forecast for Saint Nazaire before you arrive.
Temperatures
21° / 13°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
49
mm
Sun Hours
10.6
Hrs
