the baltic sea ice services

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Ice Information


Welcome to the Baltic Sea Ice Services


Up to 40 cm thick fast ice is present in the archipelagos of the northern Bay of Bothnia. In the eastern part, there is thin level ice or up to 25 cm thick very close ice up to about 35 nm off the coast. In the western part, there is 20 cm thick thin level ice and new ice up to about 20 nm off the coast. South of Malören there is an area of open water terminated in the south by close and very open ice. In the southern Bay of Bothnia and Norra Kvarken thin level ice and new ice are present along the coast. In the archipelago off Vaasa there is also up to 10 cm thick fastice. In the Sea of Bothnia, there is thin level ice and new ice along the Finnish coast and thin level ice in sheltered bays of the Swedish coast. In the Gulf of Finland, there is fastice in the eastern and northeastern bays. Eastwards and northwards of the lighthouse Sommers, there is thin level ice or new ice. In the Gulf of Riga, there is new ice in the area of Väinameri and thin level ice in the Pärnu Bay. Vistula Lagoon and Curonian Lagoon are covered by ice. New ice is found in places of the Oslofjord and adjacent coastal regions.