December in Hildesheim averages a daily high of 4.1°C with nights around -0.2°C. Expect roughly 17.8 wet days totalling 79mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Hildesheim is May–September.
Based on SALZHEMMENDORF LAUENSTEIN, GM (28.3km), 1995–2024. 12 years of December data.