Average data for 10 years
1 December
Sunday
+8°
+7°
2 December
Monday
+9°
+6°
3 December
Tuesday
+10°
+8°
4 December
Wednesday
+10°
+8°
5 December
Thursday
+11°
+9°
6 December
Friday
+12°
+9°
7 December
Saturday
+12°
+11°
8 December
Sunday
+10°
+9°
9 December
Monday
+10°
+8°
10 December
Tuesday
+10°
+8°
11 December
Wednesday
+9°
+8°
12 December
Thursday
+9°
+7°
13 December
Friday
+9°
+7°
14 December
Saturday
+8°
+7°
15 December
Sunday
+10°
+7°
16 December
Monday
+9°
+8°
17 December
Tuesday
+9°
+8°
18 December
Wednesday
+9°
+8°
19 December
Thursday
+9°
+7°
20 December
Friday
+9°
+8°
21 December
Saturday
+10°
+8°
22 December
Sunday
+10°
+9°
23 December
Monday
+11°
+9°
24 December
Tuesday
+10°
+9°
25 December
Wednesday
+8°
+7°
26 December
Thursday
+10°
+7°
27 December
Friday
+10°
+8°
28 December
Saturday
+10°
+8°
29 December
Sunday
+11°
+9°
30 December
Monday
+10°
+8°
31 December
Tuesday
+10°
+8°
In December, the weather in San Sebastian is typically warm. Average daily high temperature in December is about 10 degrees above zero. On average, San Sebastian has 15 rainy, 6 sunny, 6 partly cloudy, and 4 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit San Sebastian.