European Sea Temperature Climatology Matrix
12-month sea surface temperature index across Europe’s 31 coastal nations. Filter by month, compare regional thermal lag and upwelling phenomena, and plan optimal swimming trips using 30-year NOAA OISST v2.1 0.25° grid climatology.
Notice: 30-year historical climatological monthly mean (1991–2020), not a live single-day sensor forecast.
12-Month Sea Temperature Matrix by Country
| Country | Coastlines | May | Jun | Jul | Aug (Peak) | Sep | Oct | Guide |
|---|---|---|---|---|---|---|---|---|
 Cyprus |
9 | 20.5°C | 23.9°C | 26.6°C | 27.6°C | 26.7°C | 25°C | View Guide → |
 Turkey |
25 | 19.9°C | 23.1°C | 25.4°C | 26.6°C | 25.7°C | 23.5°C | View Guide → |
 Malta |
7 | 18.5°C | 22°C | 25°C | 26.5°C | 25.6°C | 23.7°C | View Guide → |
 Italy |
56 | 18.1°C | 21.8°C | 24.7°C | 25.8°C | 24°C | 21.4°C | View Guide → |
 Montenegro |
6 | 18.9°C | 22.8°C | 25°C | 25.5°C | 23.5°C | 21.1°C | View Guide → |
 Slovenia |
4 | 17.9°C | 22.5°C | 25°C | 25.4°C | 22.6°C | 19.3°C | View Guide → |
 Greece |
62 | 18.8°C | 22.2°C | 24.3°C | 25.3°C | 24.3°C | 22.2°C | View Guide → |
 Bosnia & Herzegovina |
1 | 18.3°C | 22.2°C | 24.4°C | 25.2°C | 23.3°C | 21°C | View Guide → |
 Bulgaria |
9 | 15.7°C | 21.1°C | 24.1°C | 25.1°C | 22.5°C | 18.4°C | View Guide → |
 Albania |
21 | 18.8°C | 22.2°C | 24°C | 25°C | 23.9°C | 21.9°C | View Guide → |
 Croatia |
30 | 17.9°C | 21.9°C | 24.2°C | 24.9°C | 22.7°C | 20.3°C | View Guide → |
 Romania |
6 | 15.7°C | 20.8°C | 23.7°C | 24.7°C | 21.8°C | 17.7°C | View Guide → |
 Monaco |
1 | 17.5°C | 21.1°C | 23.7°C | 24.6°C | 22.4°C | 19.8°C | View Guide → |
 Spain |
65 | 17.7°C | 20.2°C | 22.4°C | 23.5°C | 22.8°C | 21°C | View Guide → |
 France |
35 | 15.7°C | 18.8°C | 21.1°C | 22.1°C | 20.6°C | 18.5°C | View Guide → |
 Portugal |
36 | 17°C | 18.6°C | 19.6°C | 20.3°C | 20.3°C | 19.5°C | View Guide → |
 Belgium |
4 | 12.1°C | 15.2°C | 17.6°C | 18.9°C | 17.5°C | 14.8°C | View Guide → |
 Poland |
9 | 9.6°C | 14.2°C | 17.6°C | 18.8°C | 16.3°C | 12.5°C | View Guide → |
 Lithuania |
5 | 9.3°C | 13.9°C | 17.6°C | 18.7°C | 16.2°C | 12.5°C | View Guide → |
 Netherlands |
6 | 11.5°C | 14.7°C | 17.3°C | 18.7°C | 17.3°C | 14.6°C | View Guide → |
 Germany |
10 | 10.9°C | 14.9°C | 17.6°C | 18.6°C | 16.2°C | 12.5°C | View Guide → |
 Latvia |
5 | 8°C | 13.1°C | 17.3°C | 18.3°C | 15.5°C | 11.5°C | View Guide → |
 Sweden |
10 | 9°C | 13.7°C | 17°C | 18°C | 15.3°C | 11.6°C | View Guide → |
 Denmark |
16 | 10.1°C | 14°C | 16.8°C | 17.8°C | 15.7°C | 12.4°C | View Guide → |
 Estonia |
5 | 7.2°C | 12.5°C | 17°C | 17.8°C | 14.9°C | 10.7°C | View Guide → |
 Finland |
5 | 4.6°C | 10°C | 15.2°C | 16.4°C | 13.4°C | 9.3°C | View Guide → |
 United Kingdom |
26 | 10.7°C | 13°C | 15°C | 16°C | 15.4°C | 14.1°C | View Guide → |
 Ireland |
10 | 11.3°C | 13.5°C | 15°C | 15.6°C | 15°C | 13.6°C | View Guide → |
 Norway |
28 | 8.2°C | 11.3°C | 14°C | 15°C | 13.4°C | 11.1°C | View Guide → |
 Iceland |
8 | 7°C | 9°C | 10.5°C | 10.9°C | 9.8°C | 8.3°C | View Guide → |
 Faroe Islands |
1 | 7.6°C | 8.6°C | 9.7°C | 10.3°C | 10.2°C | 9.5°C | View Guide → |