Welcome to the Baltic Sea Ice Services
The Bay of Bothnia is still covered by 40-70 cm thick fast ice and mostly 20-50 cm thick very close ice. Along the Swedish coast, there is a lead which is covered by open to close ice up to Norra Kvarken. In the Sea of Bothnia, there is fast ice in the archipelagos but further on the ice is loosening up. At sea there is an area with close, 10-25 cm thick ice. In the Gulf of Finland there is compact ice in the east, else 5-15 cm thick very open to open ice occurs at sea. In the Gulf of Riga there is fast ice in Vainameri and ice with varying concentration in the central part of the gulf. Further south the ice is disappering more and more.