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.

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.

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Leaflet | © OpenStreetMap contributors

ideal swimming

pleasant swimming

cool swimming

cold swimming

freezing swimming

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Where 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

Sea temperature in april at the shore of the Baltic Sea:

42°F to 46°F

freezing swimming

Denmark

Sea temperature in april at the shore of the Baltic Sea:

40°F to 46°F

freezing swimming

Estonia

Sea temperature in april at the shore of the Baltic Sea:

35°F to 36°F

freezing swimming

Finland

Sea temperature in april at the shore of the Baltic Sea:

32°F to 36°F

freezing swimming

Lapland

Sea temperature in april at the shore of the Baltic Sea:

32°F to 34°F

freezing swimming

Latvia

Sea temperature in april at the shore of the Baltic Sea:

37°F to 40°F

freezing swimming

Lithuania

Sea temperature in april at the shore of the Baltic Sea:

40°F to 40°F

freezing swimming

Poland

Sea temperature in april at the shore of the Baltic Sea:

40°F to 43°F

freezing swimming

Russia

Sea temperature in april at the shore of the Baltic Sea:

34°F to 41°F

freezing swimming

Sweden

Sea temperature in april at the shore of the Baltic Sea:

33°F to 45°F

freezing swimming

Water 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:

Water temperature of the Baltic Sea in january - Minimum: 31°F/Maximum: 40°F Water temperature of the Baltic Sea in february - Minimum: 31°F/Maximum: 40°F Water temperature of the Baltic Sea in march - Minimum: 32°F/Maximum: 39°F Water temperature of the Baltic Sea in april - Minimum: 32°F/Maximum: 46°F Water temperature of the Baltic Sea in may - Minimum: 36°F/Maximum: 54°F Water temperature of the Baltic Sea in june - Minimum: 47°F/Maximum: 63°F Water temperature of the Baltic Sea in july - Minimum: 53°F/Maximum: 69°F Water temperature of the Baltic Sea in august - Minimum: 55°F/Maximum: 68°F Water temperature of the Baltic Sea in september - Minimum: 50°F/Maximum: 64°F Water temperature of the Baltic Sea in october - Minimum: 44°F/Maximum: 57°F Water temperature of the Baltic Sea in november - Minimum: 39°F/Maximum: 51°F Water temperature of the Baltic Sea in december - Minimum: 35°F/Maximum: 44°F

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