December in Lünen averages a daily high of 6.5°C with nights around 1.7°C. Expect roughly 17 wet days totalling 67.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Lünen is May–September.
Based on LUDINGHAUSEN BROCHTRUP, GM (16.9km), 1995–2024. 21 years of December data.