
Best season for visiting Trondheim with a dog
May-September are ideal for outdoor activity — average highs 13-18 °C, the Bymarka trails are dry, the Munkholmen ferry runs, and the Norwegian midsummer light extends usable daylight to 23:00. October-April are colder (-5 to +8 °C) but Trondheim has remarkable midwinter snow conditions for skijoring with a dog (December-March).

