Monthly weather forecast in Helsinki

30 daysJanFebMarAprMayJunJulAugSepOctNovDec
30 daysJanFebMarAprMayJunJulAugSepOctNovDec
SundayMondayTuesdayWednesdayThursdayFridaySaturday
15 September, Sunday. day, 16°; night, 11°; light rain16 September, Monday. day, 18°; night, 14°; light rain17 September, Tuesday. day, 20°; night, 12°; overcast18 September, Wednesday. day, 19°; night, 12°; overcast19 September, Thursday. day, 19°; night, 12°; mostly clear20 September, Friday. day, 19°; night, 10°; overcast21 September, Saturday. day, 16°; night, 10°; partly cloudy
22 September, Sunday. day, 14°; night, 9°; mostly clear23 September, Monday. day, 13°; night, 12°; overcast24 September, Tuesday. day, 14°; night, 11°; rain25 September, Wednesday. day, 12°; night, 8°; light rain26 September, Thursday. day, 13°; night, 8°; partly cloudy27 September, Friday. day, 11°; night, 9°; overcast28 September, Saturday. day, 12°; night, 10°; light rain
29 September, Sunday. day, 12°; night, 12°; light rain30 September, Monday. day, 14°; night, 13°; light rain1 October, Tuesday. day, 13°; night, 10°; light rain2 October, Wednesday. day, 13°; night, 13°; partly cloudy3 October, Thursday. day, 13°; night, 13°; light rain4 October, Friday. day, 15°; night, 12°; light rain5 October, Saturday. day, 12°; night, 12°; light rain
6 October, Sunday. day, 12°; night, 12°; clear7 October, Monday. day, 13°; night, 12°; rain8 October, Tuesday. day, 13°; night, 12°; partly cloudy9 October, Wednesday. day, 13°; night, 12°; light rain10 October, Thursday. day, 12°; night, 11°; partly cloudy11 October, Friday. day, 12°; night, 12°; rain12 October, Saturday. day, 12°; night, 11°; rain
13 October, Sunday. day, 12°; night, 11°; light rain14 October, Monday. day, 12°; night, 11°; rainNext, the average data for 10 years15 October, Tuesday. day, 7°; night, 5°; rain16 October, Wednesday. day, 8°; night, 5°; rain17 October, Thursday. day, 6°; night, 6°; rain18 October, Friday. day, 7°; night, 5°; overcast19 October, Saturday. day, 7°; night, 6°; clear

Average for 30 days

3 sunny days; 17 days with precipitation; 10 cloudy days;
air humidity 79%; 12 millimeters of precipitation (2% of annual average); Wind north-westerly 6.6 Meters per second; Water temperature +18°