31.12
wed
wed
Day
45°F
S 4 mph
Precip.
0%
0%
Night
34°F
N 4 mph
Precip.
0%
0%
01.01
thu
thu
Day
48°F
N 9 mph
Precip.
0%
0%
Night
46°F
N 8 mph
Precip.
0%
0%
02.01
fri
fri
Day
50°F
N 7 mph
Precip.
0%
0%
Night
52°F
N 8 mph
Precip.
100%
100%
03.01
sat
sat
Day
48°F
SW 9 mph
Precip.
100%
100%
Night
39°F
SW 9 mph
Precip.
100%
100%
04.01
sun
sun
Day
37°F
SW 9 mph
Precip.
0%
0%
Night
32°F
SW 10 mph
Precip.
0%
0%
05.01
mon
mon
Day
36°F
SW 6 mph
Precip.
0%
0%
Night
32°F
W 3 mph
Precip.
0%
0%
06.01
tue
tue
Day
39°F
SW 2 mph
Precip.
0%
0%
Night
32°F
N 4 mph
Precip.
0%
0%
07.01
wed
wed
Day
45°F
W 2 mph
Precip.
0%
0%
Night
34°F
N 4 mph
Precip.
0%
0%
08.01
thu
thu
Day
46°F
W 3 mph
Precip.
0%
0%
Night
34°F
NW 4 mph
Precip.
0%
0%
09.01
fri
fri
Day
46°F
W 3 mph
Precip.
0%
0%
Night
36°F
NW 6 mph
Precip.
0%
0%
10.01
sat
sat
Day
50°F
N 7 mph
Precip.
0%
0%
Night
41°F
N 9 mph
Precip.
0%
0%
11.01
sun
sun
Day
54°F
N 7 mph
Precip.
0%
0%
Night
46°F
N 10 mph
Precip.
0%
0%
12.01
mon
mon
Day
57°F
N 14 mph
Precip.
0%
0%
Night
59°F
N 18 mph
Precip.
59%
59%
13.01
tue
tue
Day
55°F
NE 17 mph
Precip.
48%
48%
Night
50°F
NE 6 mph
Precip.
68%
68%
sea water
temperature
temperature
| San Sebastian |
monthly
weather
weather
| San Sebastian |
current
weather
weather
| San Sebastian |
7 days
forecast
forecast
| San Sebastian |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 58.6°F. The highest and lowest sea temperatures during the month were 59.9°F and 57.2°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 55.8°F. The highest and lowest sea temperatures during the month were 56.7°F and 54.7°F.
Air temperature in San Sebastian, °F
Precipitation total in San Sebastian, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Sebastian
San Sebastian on a weather map
Places in Spain:
Name
°F
24 Hours Forecast
San Sebastian
Local time: 20:50
December 31, wednesday
2100
34°F
N
4 mph
4 mph
January 01, thursday
0000
34°F
N
4 mph
4 mph
0300
36°F
NW
6 mph
6 mph
0600
36°F
N
7 mph
7 mph
0900
37°F
N
9 mph
9 mph
1200
48°F
N
9 mph
9 mph
1500
50°F
N
9 mph
9 mph
1800
45°F
N
8 mph
8 mph
