June in Trondheim averages a daily high of 17°C with nights around 8.9°C. Expect roughly 16.2 wet days totalling 70.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Trondheim is June–August.
Based on TRONDHEIM VOLL, NO (3.6km), 1995–2024. 26 years of June data.