June in Marl averages a daily high of 22.2°C with nights around 11.2°C. Expect roughly 12.8 wet days totalling 80.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Marl is May–September.
Based on BOCHUM, GM (23.2km), 1995–2024. 13 years of June data.