Average data for 10 years
1 September
Sunday
+21°
+17°
2 September
Monday
+21°
+17°
3 September
Tuesday
+21°
+17°
4 September
Wednesday
+21°
+17°
5 September
Thursday
+22°
+17°
6 September
Friday
+21°
+17°
7 September
Saturday
+22°
+18°
8 September
Sunday
+23°
+18°
9 September
Monday
+22°
+19°
10 September
Tuesday
+22°
+18°
11 September
Wednesday
+20°
+17°
12 September
Thursday
+20°
+17°
13 September
Friday
+18°
+17°
14 September
Saturday
+19°
+15°
15 September
Sunday
+18°
+16°
16 September
Monday
+17°
+15°
17 September
Tuesday
+18°
+16°
18 September
Wednesday
+17°
+15°
19 September
Thursday
+19°
+15°
20 September
Friday
+20°
+16°
21 September
Saturday
+20°
+17°
22 September
Sunday
+21°
+17°
23 September
Monday
+19°
+17°
24 September
Tuesday
+19°
+16°
25 September
Wednesday
+19°
+16°
26 September
Thursday
+20°
+16°
27 September
Friday
+20°
+16°
28 September
Saturday
+21°
+16°
29 September
Sunday
+19°
+17°
30 September
Monday
+19°
+16°
Cities with similar weather in September
United States
San Francisco
Montenegro
Podgorica
Canada
Toronto
Italy
Genoa
United States
Boston
In September, the weather in San Sebastian is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, San Sebastian has 12 sunny, 12 partly cloudy, and 6 rainy days in September. The rains are usually light. September as well as August is considered the most comfortable time to visit San Sebastian.