Average sea water temperature in September:
+70.4°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:
2026
2025
2024
The average sea water temperature in September of 2026 was 72.5°F. The highest and lowest sea temperatures during the month were 73.8°F and 71.1°F.
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Monthly sea water temperature in San Sebastian, °F
Which Spain resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Magaluf | 81.6°F | 80.1°F |
| Santa Ponsa | 81.6°F | 80.0°F |
| Sa Coma | 81.5°F | 79.4°F |
| Palma | 81.5°F | 80.1°F |
| Palma de Majorka | 81.5°F | 80.1°F |
| Palma de Mallorca | 81.5°F | 79.8°F |
| Cala Mayor | 81.4°F | 79.9°F |
| Cala Ratjada | 81.3°F | 79.1°F |
| Ibiza | 81.2°F | 79.6°F |
| Can Picafort | 81.0°F | 79.3°F |
| Alcudia | 80.7°F | 79.5°F |
| La Manga | 80.7°F | 79.8°F |
| Menorca | 80.6°F | 78.2°F |
| Murcia | 80.6°F | 79.8°F |
| Sitges | 80.2°F | 78.0°F |
| Tarragona | 80.1°F | 77.9°F |
| San Pedro del Pinatar | 80.0°F | 79.4°F |
| La Pineda | 79.9°F | 77.8°F |
| Reus | 79.9°F | 77.7°F |
| Pineda de Mar | 79.8°F | 77.6°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: 19:35
September 25, friday
2100
63°F
SE
3 mph
3 mph
September 26, saturday
0000
63°F
SE
2 mph
2 mph
0300
61°F
SE
2 mph
2 mph
0600
61°F
SE
2 mph
2 mph
0900
63°F
SE
1 mph
1 mph
1200
68°F
S
4 mph
4 mph
1500
73°F
S
7 mph
7 mph
1800
68°F
S
5 mph
5 mph
