April in Kerpen averages a daily high of 15.6°C with nights around 4.4°C. Expect roughly 10.4 wet days totalling 35.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kerpen is May–September.
Based on WEILERSWIST LOMMERSUM, GM (18.7km), 1995–2024. 29 years of April data.