Welcome to the Baltic Sea Ice Service

04.02.2025

In the Bay of Bothnia, there is 15–55 cm thick fast ice in the northern archipelagos. Further out in the north and east, there is new ice. At sea, there is very close, up to 45 cm thick drift ice and up to 20 cm thick close ice in the west and up to 30 cm thick, close to open ice in the east. In the southern archipelagos, there is up to 30 cm thick fast ice. Further out is open to close ice. In the Quark, there is up to 35 cm thick fast ice in the inner archipelagos. At sea and along the coasts is new ice with thin open ice in the west. Along the coast of the Sea of Bothnia there is mostly fast ice in the north and thin ice in the south with new ice further out in the east. In the eastern Gulf of Finland, there is 10–30 cm thick ice at St. Petersburg and new ice further west. In the Vyborg Bay, there is up to 20 cm thick fast ice. Else, there is thin level ice and new ice at some sheltered places along the northern coast of the Gulf of Finland, the Archipelago Sea, the Åland Sea and Lake Mälaren.