17.05
sun
sun
Day
63°F
SE 6 mph
Precip.
70%
70%
Night
52°F
E 2 mph
Precip.
0%
0%
18.05
mon
mon
Day
63°F
S 2 mph
Precip.
0%
0%
Night
57°F
S 3 mph
Precip.
80%
80%
19.05
tue
tue
Day
70°F
SE 3 mph
Precip.
100%
100%
Night
54°F
NW 3 mph
Precip.
0%
0%
20.05
wed
wed
Day
72°F
SW 5 mph
Precip.
0%
0%
Night
57°F
N 3 mph
Precip.
0%
0%
21.05
thu
thu
Day
81°F
NW 6 mph
Precip.
0%
0%
Night
66°F
N 6 mph
Precip.
0%
0%
22.05
fri
fri
Day
82°F
NW 3 mph
Precip.
0%
0%
Night
61°F
NE 6 mph
Precip.
100%
100%
23.05
sat
sat
Day
61°F
SE 6 mph
Precip.
100%
100%
Night
55°F
N 4 mph
Precip.
0%
0%
24.05
sun
sun
Day
64°F
SE 7 mph
Precip.
100%
100%
Night
55°F
SE 8 mph
Precip.
100%
100%
25.05
mon
mon
Day
59°F
SE 8 mph
Precip.
100%
100%
Night
55°F
S 4 mph
Precip.
0%
0%
26.05
tue
tue
Day
64°F
SW 6 mph
Precip.
0%
0%
Night
57°F
NW 3 mph
Precip.
0%
0%
27.05
wed
wed
Day
79°F
NW 2 mph
Precip.
0%
0%
Night
66°F
N 4 mph
Precip.
0%
0%
28.05
thu
thu
Day
79°F
NE 4 mph
Precip.
22%
22%
Night
59°F
N 2 mph
Precip.
100%
100%
29.05
fri
fri
Day
73°F
E 3 mph
Precip.
25%
25%
Night
63°F
NE 6 mph
Precip.
100%
100%
30.05
sat
sat
Day
63°F
SE 6 mph
Precip.
80%
80%
Night
61°F
N 2 mph
Precip.
100%
100%
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 May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 61.8°F. The highest and lowest sea temperatures during the month were 63.3°F and 60.6°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: 15:53
May 17, sunday
1800
61°F
SE
7 mph
7 mph
2100
54°F
SE
4 mph
4 mph
May 18, monday
0000
52°F
E
2 mph
2 mph
0300
52°F
NE
2 mph
2 mph
0600
48°F
N
3 mph
3 mph
0900
55°F
N
2 mph
2 mph
1200
63°F
S
2 mph
2 mph
1500
64°F
S
7 mph
7 mph
