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Trondheim

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Trondheim Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Trondheim year round climate

  • Spring (March–May): Average 1.5–10.9°C, cold and humid climate with occasional sunshine; snow is possible in March. Common activities: Hiking, visiting museums and art galleries. Recommended clothing: Warm jacket, waterproof clothing, hat and scarf.
  • Summer (June–August): Average 13.8–14.6°C, mild climate with plenty of sunshine, but occasional showers. Common activities: Hiking, boating, fishing, exploring the fjords. Recommended clothing: Light jacket, long-sleeved shirt, comfortable and breathable trousers.
  • Autumn (September–November): Average 5.9–11.1°C, cool climate with frequent rainfall; October is the rainiest month. Common activities: Enjoying autumn scenery, visiting museums and art galleries. Recommended clothing: Waterproof jacket, warm clothing, comfortable shoes.
  • Winter (December–February): Average -2.5–-0.1°C, cold climate with frequent snowfall and rainfall, temperatures below freezing. Common activities: Skiing, ice skating, visiting indoor attractions. Recommended clothing: Heavy waterproof jacket, warm underwear, hat, gloves, scarf and warm shoes.

Trondheim climatological average

Annual average temperature: approx. 6.2°C / Annual rainfall: approx. 860 mm / Summer humidity: 65%–75% / Rainiest month: October

Trondheim monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-0.7°C
92.2
February
-0.1°C
74.5
March
1.5°C
40
April
4.3°C
46.5
May
10.9°C
40
June
13.8°C
68.5
July
14.4°C
87.1
August
14.6°C
93
September
11.1°C
88.1
October
5.9°C
105.4
November
1.1°C
57.4
December
-2.5°C
67.6

Trondheim weather for the next seven days

12/16
Tuesday
Patchy rain nearby
3.2°C/2.5°C
12/17
Wednesday
Patchy rain nearby
2.4°C/0.4°C
12/18
Thursday
Patchy rain nearby
2°C/0.7°C
12/19
Friday
Patchy rain nearby
7°C/2.1°C
12/20
Saturday
Patchy rain nearby
5.7°C/1.7°C
12/21
Sunday
Cloudy
3.1°C/2.8°C
12/22
Monday
Partly Cloudy
1.5°C/0.8°C