Welcome to the Baltic Sea Ice Service

14.04.2026

In the Bay of Bothnia, there is up to 75 cm thick, locally rotten fast ice, along the coasts in the north. At sea in the north, there is very close, 20–50 cm thick and in places ridged and rafted ice. Areas of open water and leads occur in the ice field. Along the southern coast is open water. In the Quark, there is mostly open water with rotten fast ice at few places along the coast. The Bothnian Sea is with exception of the Ångermanälven ice-free. In the Gulf of Finland, there is 5–20 cm thick drifting ice of varying concentration at sea in the northeast. In the northeastern Gulf of Riga, there is open to close drifting ice at places.