January in Kerpen averages a daily high of 5.8°C with nights around 0.3°C. Expect roughly 13.9 wet days totalling 35.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kerpen is May–September.
Based on WEILERSWIST LOMMERSUM, GM (18.7km), 1995–2024. 29 years of January data.