Weather forecast Reykjavík 21-09-2025

Weather Sunday 21 September temperature from 4 °C to 9 °C, cloud cover up to 100%, precipitation is expected with a 61% chance, wind up to 5.39 m/s (gusts up to 8.53 m/s), air humidity from 67% to 95%, atmospheric pressure from 768 to 772 mm Hg, UV Index to 2 during the day. Forecast for the next days on the chart.