Where is the sea warmest in the Baltic in March?
In March the warmest sea in the Baltic is at Vejle, Denmark, at 5.1°C. Nowhere in the region is comfortable for swimming this month — not one of the 90 cities measured reaches 19.0°C.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | Vejle | Denmark | 5.1°C | Dangerous |
| 2 | Fredericia | Denmark | 5.1°C | Dangerous |
| 3 | Horsens | Denmark | 5.1°C | Dangerous |
| 4 | Frederikshavn | Denmark | 5.1°C | Dangerous |
| 5 | Århus | Denmark | 5.1°C | Dangerous |
| 6 | Korsør | Denmark | 4.8°C | Dangerous |
| 7 | Faaborg | Denmark | 4.7°C | Dangerous |
| 8 | Fehmarn | Germany | 4.7°C | Dangerous |
| 9 | Nykøbing Falster | Denmark | 4.7°C | Dangerous |
| 10 | Oldenburg in Holstein | Germany | 4.7°C | Dangerous |
| 11 | Sønderborg | Denmark | 4.7°C | Dangerous |
| 12 | Świnoujście | Poland | 4.7°C | Dangerous |
| 13 | Wolin | Poland | 4.7°C | Dangerous |
| 14 | Kappeln | Germany | 4.7°C | Dangerous |
| 15 | Ribnitz-Damgarten | Germany | 4.6°C | Dangerous |
| 16 | Kamień Pomorski | Poland | 4.6°C | Dangerous |
| 17 | Universitäts- und Hansestadt Greifswald | Germany | 4.6°C | Dangerous |
| 18 | Wolgast | Germany | 4.6°C | Dangerous |
| 19 | Roskilde | Denmark | 4.5°C | Dangerous |
| 20 | Kołobrzeg | Poland | 4.5°C | Dangerous |
| 21 | Trzebiatów | Poland | 4.5°C | Dangerous |
| 22 | Køge | Denmark | 4.5°C | Dangerous |
| 23 | Helsingborg | Sweden | 4.5°C | Dangerous |
| 24 | Lund | Sweden | 4.5°C | Dangerous |
| 25 | Bergen auf Rügen | Germany | 4.5°C | Dangerous |
Ranked on the NOAA OISST monthly climatology — a long-run average for March, not a forecast. A given March will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.