Monthly weather forecast in Helsinki

30 daysJanFebMarAprMayJunJulAugSepOctNovDec
30 daysJanFebMarAprMayJunJulAugSepOctNovDec
SundayMondayTuesdayWednesdayThursdayFridaySaturday
1 September, Sunday. day, 16°; night, 12°; rain2 September, Monday. day, 15°; night, 13°; rain3 September, Tuesday. day, 16°; night, 13°; partly cloudy4 September, Wednesday. day, 17°; night, 13°; partly cloudy5 September, Thursday. day, 16°; night, 13°; partly cloudy6 September, Friday. day, 16°; night, 13°; clear7 September, Saturday. day, 22°; night, 15°; mostly clear
8 September, Sunday. day, 22°; night, 16°; partly cloudy9 September, Monday. day, 23°; night, 18°; mostly clear10 September, Tuesday. day, 22°; night, 18°; mostly clear11 September, Wednesday. day, 18°; night, 16°; rain12 September, Thursday. day, 18°; night, 14°; rain13 September, Friday. day, 19°; night, 14°; light rain14 September, Saturday. day, 19°; night, 14°; partly cloudy
15 September, Sunday. day, 18°; night, 14°; overcast16 September, Monday. day, 17°; night, 15°; overcast17 September, Tuesday. day, 16°; night, 13°; overcast18 September, Wednesday. day, 17°; night, 13°; partly cloudy19 September, Thursday. day, 17°; night, 15°; mostly clear20 September, Friday. day, 16°; night, 14°; mostly clear21 September, Saturday. day, 15°; night, 13°; mostly clear
22 September, Sunday. day, 13°; night, 13°; rain23 September, Monday. day, 15°; night, 13°; mostly clear24 September, Tuesday. day, 15°; night, 14°; clear25 September, Wednesday. day, 16°; night, 14°; clear26 September, Thursday. day, 16°; night, 14°; clear27 September, Friday. day, 15°; night, 12°; clear28 September, Saturday. day, 13°; night, 11°; clear
29 September, Sunday. day, 12°; night, 12°; partly cloudy30 September, Monday. day, 13°; night, 12°; rain1 October, Tuesday. day, 13°; night, 13°; rain2 October, Wednesday. day, 15°; night, 12°; rain3 October, Thursday. day, 12°; night, 11°; partly cloudy4 October, Friday. day, 13°; night, 14°; rain5 October, Saturday. day, 13°; night, 11°; light rain

Average for 30 days

13 sunny days; 9 days with precipitation; 8 cloudy days;
air humidity 76%; 16 millimeters of precipitation (3% of annual average); Wind south-easterly 7.6 Meters per second; Water temperature +18°