the baltic sea ice services


News and dates

Ice Information

BSIM

  • BSIM-29 will be held in the week 13-17. October 2025 in Berlin, also commemorating 100 Years of collaboration between Baltic ice services.
  • The last BSIM-28 was in 2023 in Tallin, Estonia

Welcome to the Baltic Sea Ice Services

Latest ice report
Detailed ice chart 

30.04.2025

In the Bay of Bothnia, there is 20–70 cm thick, partly rotten fast ice in the northern archipelagos. Off the fast ice in the north, there is locally 10–50 cm thick, close ice and else very open ice. Further south at sea in the northeast, there is up to 50 cm thick, very close and partly ridged and rafted ice. Else at sea it is ice-free.