December in Ústí nad Labem averages a daily high of -1.3°C with nights around -5.5°C. Expect roughly 15.7 wet days totalling 55.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Ústí nad Labem is May–August.
Based on MILESOVKA, EZ (13.8km), 1995–2024. 10 years of December data.