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helsinki Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

helsinki year round climate

  • Spring (March–May): Average 32–52°F, cold climate, gradually warming; snowmelt in some areas during March–May; less rainfall. Common activities: Visiting museums, art galleries, indoor activities. Recommended clothing: Warm coat, sweater, scarf, hat.
  • Summer (June–August): Average 62–65°F, warm and comfortable climate, sunny, occasional showers. Common activities: Outdoor activities, visiting parks, seaside walks, boating. Recommended clothing: Light and breathable clothing, short sleeves, sandals.
  • Autumn (September–November): Average 46–57°F, cool climate, gradually cooling, more rainfall; October has the most rainfall. Common activities: Visiting indoor attractions, enjoying Finnish sauna. Recommended clothing: Jacket, long pants, comfortable shoes.
  • Winter (December–February): Average -3.2–-34.2°F, cold climate, snow accumulation, short daylight hours. Common activities: Skiing, ice skating, appreciating winter scenery. Recommended clothing: Warm down jacket, thick sweater, warm pants, waterproof and windproof shoes, hat, gloves, scarf.

helsinki climatological average

Annual average temperature: approx. 45.3°F / Annual rainfall: approx. 692 mm / Summer humidity: 60%–70% / Rainiest month: October

helsinki monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
26.2°F
70
February
29.1°F
69.3
March
32.9°F
34
April
40.3°F
41.7
May
52.5°F
23
June
62.6°F
21.7
July
64.6°F
61.3
August
65.3°F
79.3
September
57.2°F
71.3
October
46°F
81
November
36.9°F
65
December
29.8°F
75

helsinki weather for the next seven days

3/19
Thursday
Patchy rain nearby
40.7°F/33.9°F
3/20
Friday
Sunny
42.7°F/31.5°F
3/21
Saturday
Sunny
41.6°F/33.3°F
3/22
Sunday
Sunny
40.1°F/33.9°F
3/23
Monday
Sunny
40.7°F/32.3°F
3/24
Tuesday
Sunny
39.5°F/32.1°F
3/25
Wednesday
Partly Cloudy
40.1°F/32.3°F