Helsinki Airport Weather Average Temperature by Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max Temperate (°C) -4 -3 1 7 15 19 21 20 14 9 3 -1 Min Temperate (°C) -10 -10 -6 -1 5 10 12 11 7 3 -2 -7 Max Temperate (°F) 25 27 34 45 59 66 70 68 57 48 37 30 Min Temperate (°F) 14 14 21 30 41 50 54 52 45 37 28 19 Sea Temperate (°C) 1 -1 -1 0 5 10 12 16 14 9 6 3 Average Sunlight by Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Hours of Sunshine 1 2 4 6 8 9 8 7 4 3 1 1 Hours of Daylight 7 9 12 15 17 19 18 16 13 10 7 6 Average Rainfall by Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Days with Rain 20 17 16 13 10 11 14 16 17 17 21 22 Average Rainfall (mm) 43 33 35 37 33 42 67 77 73 72 70 58
