Current sea water temperature:
+61.5°F
| Minimum sea water temperature in April: | 61.7°F |
| Maximum sea water temperature in April: | 52.9°F |
| Average sea water temperature in April: | 56.7°F |
| more information | |
14 days
forecast
forecast
| San Sebastian |
monthly
weather
weather
| San Sebastian |
Sea water temperature for the last 10 days:
| April 26 | 61.5°F | April 21 | 59.2°F |
| April 25 | 61.7°F | April 20 | 60.1°F |
| April 24 | 61.0°F | April 19 | 59.4°F |
| April 23 | 60.6°F | April 18 | 58.5°F |
| April 22 | 60.6°F | April 17 | 58.3°F |
Monthly sea water temperature, °F
When is the warmest sea in San Sebastian?
Based on the data about daily sea water temperature for the last three years the warmest sea in San Sebastian was noticed in August, July and September.
Monthly Sea Temperatures in San Sebastian, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.8°F. The highest and lowest sea temperatures during the month were 75.9°F and 72.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 75.0°F and 72.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 70.2°F. The highest and lowest sea temperatures during the month were 72.0°F and 68.2°F.
current
weather
weather
| San Sebastian |
weather in
May
May
| San Sebastian |
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: 05:17
April 27, monday
0600
50°F
N
2 mph
2 mph
0900
59°F
NE
1 mph
1 mph
1200
66°F
S
5 mph
5 mph
1500
66°F
S
6 mph
6 mph
1800
63°F
SE
2 mph
2 mph
2100
57°F
SE
3 mph
3 mph
April 28, tuesday
0000
57°F
NE
6 mph
6 mph
0300
57°F
N
2 mph
2 mph
