San Sebastian Weather

San Sebastián features an oceanic climate with warm summers and cool winters. Like many cities with this climate, San Sebastián typically experiences cloudy or overcast conditions for the majority of the year, typically with some precipitation. The city averages roughly 1,650 mm (65 in) of precipitation annually, which is fairly evenly spread throughout the year. However, the city is somewhat drier and noticeably sunnier in the summer months, experiencing on average approximately 100 mm (3.94 in) of precipitation during those months. Average temperatures range from 8.9 °C (48.0 °F) in January to 21.5 °C (70.7 °F) in August.

Average Temperature
Jan
50 °F
10 °C
Feb
61 °F
16 °C
Mar
57 °F
14 °C
Apr
63 °F
17 °C
May
63 °F
17 °C
Jun
72 °F
22 °C
Jul
73 °F
23 °C
Aug
75 °F
24 °C
Sep
72 °F
22 °C
Oct
70 °F
21 °C
Nov
56 °F
14 °C
Dec
57 °F
14 °C
Humidity
Jan
77%
Feb
67%
Mar
67%
Apr
71%
May
76%
Jun
76%
Jul
78%
Aug
79%
Sep
75%
Oct
74%
Nov
79%
Dec
75%
Rain
Jan
68mm
Feb
21mm
Mar
18mm
Apr
71mm
May
62mm
Jun
159mm
Jul
54mm
Aug
35mm
Sep
30mm
Oct
63mm
Nov
155mm
Dec
72mm
Clouds
Jan
75%
Feb
47%
Mar
53%
Apr
66%
May
64%
Jun
56%
Jul
55%
Aug
64%
Sep
52%
Oct
74%
Nov
92%
Dec
71%
Air quality US AQI
Jan
36
Feb
48
Mar
38
Apr
31
May
30
Jun
36
Jul
37
Aug
35
Sep
42
Oct
34
Nov
29
Dec
37
Sun
Jan
1UVI
Feb
3UVI
Mar
4UVI
Apr
4UVI
May
6UVI
Jun
7UVI
Jul
7UVI
Aug
6UVI
Sep
5UVI
Oct
3UVI
Nov
2UVI
Dec
1UVI