December in Kempten (Allgäu) averages a daily high of 4.4°C with nights around -3.5°C. Expect roughly 15.5 wet days totalling 90mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kempten (Allgäu) is May–September.
Based on KEMPTEN, GM (1.7km), 1995–2024. 30 years of December data.