The temperatures in Gruissan in December are quite cold with temperatures between 7°C and 12°C, warm clothes are a must.
Gruissan is going to be cold and wet in the month of December. Expect low temperatures and a few days of rain, so be sure to bundle up to avoid catching a cold.
Our weather forecast can give you a great sense of what weather to expect in Gruissan in December 2025.
If you’re planning to visit Gruissan in the near future, we highly recommend that you review the 14 day weather forecast for Gruissan before you arrive.
Temperatures
12° / 7°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
36
mm
Sun Hours
10.3
Hrs
