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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 34–51°F, 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 56–58°F, 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 42–51°F, 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–-32.2°F, 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. 43.2°F / Annual rainfall: approx. 860 mm / Summer humidity: 65%–75% / Rainiest month: October

Trondheim monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
30.7°F
92.2
February
31.8°F
74.5
March
34.7°F
40
April
39.7°F
46.5
May
51.6°F
40
June
56.8°F
68.5
July
57.9°F
87.1
August
58.3°F
93
September
52°F
88.1
October
42.6°F
105.4
November
34°F
57.4
December
27.5°F
67.6

Trondheim weather for the next seven days

12/17
Wednesday
Light freezing rain
34°F/31.6°F
12/18
Thursday
Patchy rain nearby
35.8°F/33.1°F
12/19
Friday
Patchy rain nearby
44.9°F/34.5°F
12/20
Saturday
Patchy rain nearby
42.7°F/34.4°F
12/21
Sunday
Patchy rain nearby
38.1°F/36.8°F
12/22
Monday
Cloudy
36.4°F/32.1°F
12/23
Tuesday
Cloudy
32.2°F/31.5°F