The temperatures in Bilbao in December are quite cold with temperatures between 46°F and 55°F, warm clothes are a must.
You can expect rain for roughly half of the month of December in Bilbao. 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 Bilbao in December 2025.
If you’re planning to visit Bilbao in the near future, we highly recommend that you review the 14 day weather forecast for Bilbao before you arrive.
Temperatures
55° / 46°
Rainy Days
8
Snowy Days
0
Dry Days
23
Rainfall
5.35
in
Sun Hours
8.9
Hrs
