Welcome to the Baltic Sea Ice Services
The archipelago in the northern Bay of Bothnia are covered with 15-35 cm thick fast ice; farther out there are, approximately to the line Bjuröklubb – Nygrån – Malören - Raahe new ice, thin level ice and up to 20 cm thick ice. A brash ice barrier is present at the ice edge, in places. In the southern part there is thin level ice or new ice in the archipelago and new ice along the coasts. Thin level ice or new ice is also present in the skerries and near the coast of Norra Kvarken and of Sea of Bothnia. Ångermanälv is covered with 5-20 cm thick fast ice.
In the Gulf of Finland, thin ice or new ice occurs in the archipelago of the Finnish coast. The Vyborg Bay is covered with 15-20 cm thick fast ice. Very close to open 10-20 cm thick ice is present east of 29°E.
In the Gulf of Riga up to 12 cm thick ice or new ice occurs at the northern coast, in the Pärnu Bay, and in Moonsund.
In the western part of the Lake Mälaren there is thin level ice.