April in Lünen averages a daily high of 15.4°C with nights around 4.2°C. Expect roughly 10.4 wet days totalling 36.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Lünen is May–September.
Based on LUDINGHAUSEN BROCHTRUP, GM (16.9km), 1995–2024. 20 years of April data.