Welcome to the Baltic Sea Ice Service

23.04.2026

In the Bay of Bothnia, there is rotten fast ice along the coasts in the northwest and north. Along the northeastern coast is very open to open ice. At sea in the north, there is close to very close, 20–50 cm thick and in places ridged ice. Areas of open water and leads occur in the ice field. In the east, there is open to very close ice with drifting floes to south of Ulkokalla. Further south it is ice-free.