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helsinki Weather and climate

Data source:Meteostat
Update date:2025-09

helsinki year round climate
  • Spring (March–May): Average 0.5–11.4°C, 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 17–18.5°C, 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 7.8–14°C, 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–-1.2°C, 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. 7.4°C / Annual rainfall: approx. 692 mm / Summer humidity: 60%–70% / Rainiest month: October

helsinki monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-3.2°C
70
February
-1.6°C
69.3
March
0.5°C
34
April
4.6°C
41.7
May
11.4°C
23
June
17°C
21.7
July
18.1°C
61.3
August
18.5°C
79.3
September
14°C
71.3
October
7.8°C
81
November
2.7°C
65
December
-1.2°C
75
helsinki weather for the next seven days
10/14
Tuesday
Patchy rain nearby
8.4°C/6°C
10/15
Wednesday
Patchy rain nearby
9.1°C/5°C
10/16
Thursday
Patchy rain nearby
11.4°C/4.3°C
10/17
Friday
Patchy rain nearby
6.8°C/2.8°C
10/18
Saturday
Patchy rain nearby
6.1°C/1.7°C
10/19
Sunday
Patchy rain nearby
8.7°C/1.8°C
10/20
Monday
Patchy rain nearby
5°C/3.5°C