
Port average temperature
Trondheim has a predominantly maritime climate, but is mostly sheltered from the more windy conditions on the coast. The warmest temperature ever recorded is 35°C on 22 July 1901, and the coldest is -26.1°C in February 1899. Trondheim experiences moderate snowfall from November to March, but mixed with mild weather and rainfall. There are on average 14 days each winter with at least 25 cm snow cover on the ground and 22 days with daily minimum temperature -10°C or colder. There is often substantially more snow in suburban areas at somewhat higher elevation, such as Byasen and Heimdal, with good skiing conditions in Bymarka.
Spring often sees much sunshine, but nights can be chilly or cold. The daily high temperature can exceed 20°C from early May to late September, but not reliably so, on average are 34 days each summer warmer than 20°C. October is the most typical autumn month with cool temperatures and fall foliage, while November is considerably darker and colder. Average annual precipitation is 892 mm fairly evenly spread out over the year, although September and October typically sees twice as much precipitation as March, April and May. Temperatures have tended to be warmer in recent years. The Trondelag area has seen average temperatures increase by almost 2°C the last 25 years. The temperate figures shown are based on monthly average weather conditions for the selected port. Weather data is not real-time, and sometimes no data is shown for a specific date, month or port in general.
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