December in Zielona Góra averages a daily high of 4.6°C with nights around -1.1°C. Expect roughly 13.8 wet days totalling 40.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Zielona Góra is May–September.
Based on COSCHEN, GM (54.2km), 1995–2024. 25 years of December data.