December in Košice averages a daily high of 1.9°C with nights around -3.2°C. Expect roughly 11.7 wet days totalling 46.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Košice is May–September.
Based on KOSICE, LO (6.1km), 1995–2024. 26 years of December data.