Average data for 10 years
1 December
Monday
+12°
+11°
2 December
Tuesday
+12°
+10°
3 December
Wednesday
+13°
+10°
4 December
Thursday
+13°
+11°
5 December
Friday
+12°
+10°
6 December
Saturday
+13°
+11°
7 December
Sunday
+13°
+11°
8 December
Monday
+13°
+11°
9 December
Tuesday
+12°
+10°
10 December
Wednesday
+12°
+10°
11 December
Thursday
+13°
+11°
12 December
Friday
+13°
+11°
13 December
Saturday
+12°
+10°
14 December
Sunday
+12°
+10°
15 December
Monday
+11°
+9°
16 December
Tuesday
+12°
+9°
17 December
Wednesday
+12°
+10°
18 December
Thursday
+13°
+11°
19 December
Friday
+13°
+11°
20 December
Saturday
+12°
+10°
21 December
Sunday
+13°
+10°
22 December
Monday
+13°
+11°
23 December
Tuesday
+13°
+11°
24 December
Wednesday
+13°
+11°
25 December
Thursday
+12°
+10°
26 December
Friday
+12°
+10°
27 December
Saturday
+13°
+10°
28 December
Sunday
+12°
+10°
29 December
Monday
+12°
+10°
30 December
Tuesday
+13°
+10°
31 December
Wednesday
+12°
+10°
In December, the weather in San Sebastian is typically warm. Average daily high temperature in December is about 12 degrees above zero. On average, San Sebastian has 16 rainy, 6 sunny, 5 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.