June in Iserlohn averages a daily high of 20.4°C with nights around 10.4°C. Expect roughly 13.9 wet days totalling 73.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Iserlohn is June–September.
Based on LUDENSCHEID, GM (14.9km), 1995–2024. 30 years of June data.