Weather forecast Helsinki 21-09-2025

Weather Sunday 21 September temperature from 10 °C to 16 °C, cloud cover up to 100%, precipitation is expected with a 100% chance, wind up to 4.89 m/s (gusts up to 7.97 m/s), air humidity from 69% to 94%, atmospheric pressure from 753 to 757 mm Hg, UV Index to 1.1 during the day. Forecast for the next days on the chart.