Current sea water temperature:
+55.4°F
| Minimum sea water temperature in March: | 57.2°F |
| Maximum sea water temperature in March: | 51.4°F |
| Average sea water temperature in March: | 54.5°F |
| more information | |
14 days
forecast
forecast
| San Sebastian |
monthly
weather
weather
| San Sebastian |
Sea water temperature for the last 10 days:
| March 15 | 55.4°F | March 10 | 55.2°F |
| March 14 | 55.6°F | March 9 | 55.4°F |
| March 13 | 55.4°F | March 8 | 55.2°F |
| March 12 | 55.0°F | March 7 | 54.9°F |
| March 11 | 55.2°F | March 6 | 54.5°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
March
March
| 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: 04:25
March 16, monday
0600
48°F
NE
2 mph
2 mph
0900
50°F
NE
3 mph
3 mph
1200
55°F
SE
2 mph
2 mph
1500
57°F
S
5 mph
5 mph
1800
55°F
SW
3 mph
3 mph
2100
46°F
NW
4 mph
4 mph
March 17, tuesday
0000
45°F
NW
5 mph
5 mph
0300
43°F
NW
6 mph
6 mph
