Welcome to the Baltic Sea Ice Service

12.03.2026

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, there is very close ice, 20–50 cm thick in the north and 10–40 cm thick in the south. The Quark is mostly covered by very close ice and at the coast, 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 east and open to close ice in the west. In the Gulf of Riga, 50 cm thick fast ice is present in the northeast. At sea, there is very open ice in the southwest and else 10–30 cm thick, very close ice. Elsewhere in the Baltic region ice is present at places at the coast, in sheltered places like the lagoons in the south and southeast there is also up to 50 cm thick fast ice or very close ice, the ice is melting.