Weather forecast Helsinki 21-09-2025

Weather Sunday 21 September temperature from 9 °C to 15 °C, cloud cover up to 85%, precipitation is expected with a 87% chance, wind up to 5.31 m/s (gusts up to 7.86 m/s), air humidity from 75% to 85%, atmospheric pressure from 755 to 758 mm Hg, UV Index to 4 during the day. Forecast for the next days on the chart.