Welcome to the Baltic Sea Ice Service

31.12.2025

In the Bay of Bothnia, there is up to 25 cm thick fast ice as well as thin level ice in the northern archipelagos. Further out there is new ice and thin ice followed by open water. In the southern Bay of Bothnia as well as the Quark and the Swedish coast of the northern Bothnian Sea, there is thin ice along the coast. In the Archipelago Sea and the northeastern Gulf of Finland, there is new ice at places.