Water temperature of the Baltic Sea in april Where to swim in the Baltic Sea in april 2025?
Several countries border the seaside of the Baltic Sea, including: Germany, Denmark, Estonia, Finland, Lapland, Latvia, Lithuania, Poland, Russia and Sweden. We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of april.
Several countries border the seaside of the Baltic Sea, including: Germany, Denmark, Estonia, Finland, Lapland, Latvia, Lithuania, Poland, Russia and Sweden.
We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of april.
The seasonal average for the water temperature in the month of april is between 32°F and 46°F. The lowest sea temperature measured this month is 29°F and the highest is 51°F.
The sea temperature map of the Baltic Sea in april
The map below presents a monthly average of the water temperature of the Baltic Sea for the month of april for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see sea temperature details by city in april.
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWhere can you swim in the Baltic Sea in april?
Below, see the average temperatures measured in april in the different countries on the shores of the Baltic Sea.
Germany
42°F to 46°F
freezing swimmingDenmark
40°F to 46°F
freezing swimmingEstonia
35°F to 36°F
freezing swimmingFinland
32°F to 36°F
freezing swimmingLapland
32°F to 34°F
freezing swimmingLatvia
37°F to 40°F
freezing swimmingLithuania
40°F to 40°F
freezing swimmingPoland
40°F to 43°F
freezing swimmingRussia
34°F to 41°F
freezing swimmingSweden
33°F to 45°F
freezing swimmingWater temperature of the Baltic Sea: choose another month
See monthly seasonal averages of the water temperature of the Baltic Sea by clicking on the links below: