The temperatures in Saint Nazaire in December are quite cold with temperatures between 7°C and 11°C, warm clothes are a must.
You can expect rain for roughly half of the month of December in Saint Nazaire. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Saint Nazaire in December 2025.
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
11° / 7°
Rainy Days
9
Snowy Days
0
Dry Days
22
Rainfall
145
mm
Sun Hours
8.3
Hrs
