Average sea water temperature in September:
+70.3°F
| Minimum sea water temperature in September: | 74.3°F |
| Maximum sea water temperature in September: | 66.6°F |
Daily 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.
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| San Sebastian |
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Monthly sea water temperature in San Sebastian, °F
Which Spain resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Palma | 80.1°F | 78.5°F |
| Palma de Majorka | 80.1°F | 78.5°F |
| Magaluf | 80.1°F | 78.3°F |
| La Manga | 79.8°F | 79.1°F |
| Palma de Mallorca | 79.8°F | 78.5°F |
| Murcia | 79.8°F | 79.1°F |
| Mar Menor | 79.8°F | 79.0°F |
| Cala Figuera | 79.7°F | 78.5°F |
| Ibiza | 79.6°F | 77.7°F |
| Port de Soller | 79.6°F | 78.3°F |
| Cala Dor | 79.6°F | 78.3°F |
| Cales de Mallorca | 79.5°F | 78.4°F |
| Alcudia | 79.5°F | 78.3°F |
| Port de Pollenca | 79.4°F | 78.2°F |
| Alicante | 79.4°F | 78.7°F |
| Altea | 79.2°F | 78.0°F |
| Benidorm | 79.2°F | 78.0°F |
| Gandia | 79.2°F | 78.7°F |
| Costa Blanca | 79.2°F | 78.0°F |
| Grau i Platja | 79.1°F | 78.7°F |
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: 10:45
April 12, sunday
1200
46°F
W
4 mph
4 mph
1500
46°F
SW
4 mph
4 mph
1800
48°F
S
4 mph
4 mph
2100
41°F
SW
1 mph
1 mph
April 13, monday
0000
46°F
E
1 mph
1 mph
0300
46°F
SE
6 mph
6 mph
0600
46°F
SE
10 mph
10 mph
0900
48°F
SE
11 mph
11 mph
