December in Gera averages a daily high of 3.8°C with nights around -1.1°C. Expect roughly 13.9 wet days totalling 38.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Gera is May–September.
Based on GERA LEUMNITZ, GM (3.4km), 1995–2024. 30 years of December data.