Trondheim Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from pleasant to very cold in Trondheim. On average, daytime temperatures range from a pleasant 20°C (68°F) in July to a very cold 2°C (36°F) in January.

Nighttime temperatures range from 11°C (52°F) in July to -5°C (23°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Trondheim has a relatively rain/snowy climate with high precipitation levels, averaging 1211 mm (48 in) of rain/snowfall annually. The wettest period in Trondheim occurs in September, which receives around 120 mm (4.7 in) of precipitation. During the driest month, April, Trondheim experiences moderate rainfall, totaling 80 mm (3.1 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Trondheim Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Trondheim, summer days are longer and more sunny, with daily sunshine hours peaking at 8.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 0.6 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Trondheim.

The city experiences its highest humidity in September, reaching 82%. In May, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year