Forecast for Baltic Sea valid 24 hours from 19:00 Jan 20 to 19:00 UTC Jan 21, 2026. Warnings: Northern Baltic: east, northeast 14, in gusts to 18 m/s. Wave height 2-3 m. Moonsund, Northern Gulf of Riga: east, northeast 14, in gusts to 18 m/s. Wave height in ice free waters 0.8-1.7 m. Weather summary: weak area of High over Baltic Sea. By day periphery of Low near British islands extending over Baltic Sea. Northern Baltic: at night easterly 3-9, from morning east, northeast 5-11, in gusts to 15 m/s, in evening further increasing 9-14, in gusts to 18 m/s. In morning wave height 1-2, by evening 2-3 m. Light snow, sleet locally. Visibility moderate to good. Gulf of Finland: at night becoming east, northeast 2-8, by morning in gusts to 12 m/s, by day northeast, east 5-10, in gusts to 13, by evening in western part up to 16 m/s. Light snow, sleet locally. Visibility moderate to good, at night fog patches. Moonsund, Northern Gulf of Riga: at night east, northeast 3-8, during day gradually increasing 6-12, in gusts up to 17 m/s. By day wave height in ice free waters 0.8-1.7 m. Light snow locally. Visibility moderate, at night fog patches.
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