Welcome to the Baltic Sea Ice Service

16.01.2026

In the Bay of Bothnia, there is up to 50 cm thick fast ice in the northern archipelagos followed by 5- 15cm thick level ice. Further outside there is rafted, 10-20cm thick, very close ice at places. Else at sea there is 3-10cm thick, open ice east of the line from about Farstugrunden to Kalajoki. In the southern Bay of Bothnia, there is up to 30 cm thick fast ice or level ice along the coast, followed by a band of thin ice of different concentrations. In the Quark, there is 10 – 25 cm thick level ice or fast ice in the archipelago and at sea there is mostly thin open ice. In the Bothnian Sea, there is level ice and new ice along the coast. In the Gulf of Finland, there is fast ice in the easternmost part and thin ice and new ice slightly further west. Elsewhere along the coast is mostly new ice or thin level ice. In the northeastern Gulf of Riga there is up to 15cm thick ice at the coasts. Else in the Baltic region, there is new ice in sheltered places along the coast as well as very close ice, thicker than 10 cm in the Boddenwaters around Rügen and the lagoons in the south and southeast.