Current Sea Water Temperature:
+77.2°F
| Maximum Sea Water Temperature in August: | 79.4°F |
| Minimum Sea Water Temperature in August: | 71.8°F |
| Average water temperature in August: | 75.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| August 05 | 77.2°F | July 31 | 78.0°F |
| August 04 | 77.8°F | July 30 | 77.6°F |
| August 03 | 77.6°F | July 29 | 78.0°F |
| August 02 | 77.4°F | July 28 | 77.4°F |
| August 01 | 77.0°F | July 27 | 77.8°F |
When is the Warmest Sea for San Sebastian?
According to our data for the last three years for San Sebastian the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for San Sebastian was 76.5°F. The maximum and minimum values were 74.6°F and 78.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for San Sebastian was 78.7°F. The maximum and minimum values were 77.2°F and 80.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for San Sebastian was 72.5°F. The maximum and minimum values were 70.2°F and 74.4°F respectively.
Spain Resorts:
NAME
F°
| Alicante |  |
+86 |
| Barcelona | |
+88 |
| Costa Brava |  |
+84 |
| Eivissa | |
+86 |
| Gran Canaria | |
+78 |
| Lloret de Mar | |
+80 |
| Madrid | |
+96 |
| Malaga | |
+88 |
| Marbella | |
+88 |
| Palma de Majorka | |
+86 |
| Palma de Mallorca | |
+88 |
| Salou | |
+86 |
| Tenerife | |
+82 |
| Torrevieja | |
+84 |
| Valencia | |
+86 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
San Sebastian
Local time: 22:15
06 aug, thursday
| 0000 |  |
70°F | S 4 mph |
| 0300 | |
70°F | S 4 mph |
| 0600 | |
68°F | SW 4 mph |
| 0900 |  |
68°F | SW 4 mph |
| 1200 | |
72°F | SW 4 mph |
| 1500 |  |
74°F | S 7 mph |
| 1800 | |
74°F | S 7 mph |
| 2100 |  |
68°F | S 3 mph |