Welcome to the Baltic Sea Ice Service

16.03.2026

In the Bay of Bothnia, there fast ice along the coasts, up to 80 cm thick in the north and up to 45 cm thick in the south. At sea in the north and northeast there is very close ice, 15–50 cm thick, in places compressed, ridged and rafted. In the south there is a mix of open to very close ice at sea. In the Quark there mostly open water at sea, but also an area of very close ice; at the coasts there is up to 50 cm thick fast ice. Along the coasts of the Bothnian Sea, there is up to 55 cm thick fast ice. In the Gulf of Finland, there is up to 50 cm thick fast ice at the coasts. At sea there is 10–40 cm thick, very close ice in the northeast and east. In the Gulf of Riga, 50 cm thick fast ice is present in the northeast. At sea, there is open water in the southwest and 10–30 cm thick, very close ice in the northeast. Elsewhere in the Baltic region rotten ice is present at sheltered places at the coast.