The temperatures in Carnac in March are quite cold with temperatures between 6°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Carnac during the month of March. 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 Carnac in March 2026.
If you’re planning to visit Carnac in the near future, we highly recommend that you review the 14 day weather forecast for Carnac before you arrive.
Temperatures
12° / 6°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
75
mm
Sun Hours
8.8
Hrs
