Where is the sea warmest in the Baltic in June?
In June the warmest sea in the Baltic is at Świnoujście, Poland, at 18.1°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 | Świnoujście | Poland | 18.1°C | Bracing |
| 2 | Wolin | Poland | 18.1°C | Bracing |
| 3 | Kronstadt | Russia | 18.1°C | Bracing |
| 4 | Sestroretsk | Russia | 18.1°C | Bracing |
| 5 | Zelenogorsk | Russia | 17.7°C | Bracing |
| 6 | Universitäts- und Hansestadt Greifswald | Germany | 17.6°C | Bracing |
| 7 | Wolgast | Germany | 17.4°C | Bracing |
| 8 | Pärnu | Estonia | 17.2°C | Bracing |
| 9 | Klaipėda | Lithuania | 16.9°C | Bracing |
| 10 | Bergen auf Rügen | Germany | 16.9°C | Bracing |
| 11 | Gdańsk | Poland | 16.5°C | Bracing |
| 12 | Halmstad | Sweden | 16.4°C | Bracing |
| 13 | Ādaži | Latvia | 16.4°C | Bracing |
| 14 | Fehmarn | Germany | 16.3°C | Bracing |
| 15 | Oldenburg in Holstein | Germany | 16.3°C | Bracing |
| 16 | Jūrmala | Latvia | 16.3°C | Bracing |
| 17 | Moss | Norway | 16.3°C | Bracing |
| 18 | Svetlogorsk | Russia | 16.3°C | Bracing |
| 19 | Kappeln | Germany | 16.2°C | Bracing |
| 20 | Kamień Pomorski | Poland | 16.2°C | Bracing |
| 21 | Sønderborg | Denmark | 16.1°C | Bracing |
| 22 | Zelenogradsk | Russia | 16.1°C | Bracing |
| 23 | Nykøbing Falster | Denmark | 16.0°C | Bracing |
| 24 | Sandefjord | Norway | 16.0°C | Bracing |
| 25 | Tønsberg | Norway | 16.0°C | Bracing |
Ranked on the NOAA OISST monthly climatology — a long-run average for June, not a forecast. A given June will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.