Helsinki's climate is clear, with four distinct seasons, but long winters from November to March. The best season is from June to August in the summer, when the temperature rises but the shade is cooler and the sea breeze is felt.

Helsinki Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Highest Temperature -3 -4 0 6 14 19 22 20 15 8 3 -1 Lowest Temperature -9 -9 -7 -1 4 9 13 12 8 3 -1 -5 Precipitation 56 42 36 44 41 51 68 72 71 73 68 66 Precipitation number of days 20 18 14 13 12 13 14 15 15 18 19 20 　London Highest Temperature 6 7 10 13 17 20 22 21 19 14 10 7 Lowest Temperature 2 2 3 5 8 11 13 13 11 8 5 3 Precipitation 53 40 37 38 46 46 56 59 50 57 64 48 Precipitation number of days 17 13 11 14 13 11 13 13 13 14 16 16

Finland 　Helsinki 　Kajaani 　Kemi 　Tampere 　Turku 　Vaasa	The time difference of Helsinki is UTC+2 UTC+3 for daylight saving time Local time Daylight savings time UTC 0:00 1:00 22:00 1:00 2:00 23:00 2:00 3:00 0:00 3:00 4:00 1:00 4:00 5:00 2:00 5:00 6:00 3:00 6:00 7:00 4:00 7:00 8:00 5:00 8:00 9:00 6:00 9:00 10:00 7:00 10:00 11:00 8:00 11:00 12:00 9:00 12:00 13:00 10:00 13:00 14:00 11:00 14:00 15:00 12:00 15:00 16:00 13:00 16:00 17:00 14:00 17:00 18:00 15:00 18:00 19:00 16:00 19:00 20:00 17:00 20:00 21:00 18:00 21:00 22:00 19:00 22:00 23:00 20:00 23:00 0:00 21:00