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15.12.2025

In the northern Bay of Bothnia, there is up to 20cm thick fast ice as well as thin level ice and new ice in the northern archipelagos. In the southern Bay of Bothnia as well as along the Swedish coast of the Quark and the northern Bothnian Sea, there is thin ice in some sheltered places along the coast. Some thin ice is also present in the easternmost Gulf of Finland.

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© 2020 Baltic Sea Ice Services - Marina Kirchhoff (BSH Rostock/Germany)
Bundesamt für Seeschifffahrt und Hydrographie (BSH)