December in Québec averages a daily high of -2°C with nights around -8.7°C. Expect roughly 16.3 wet days totalling 109.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Québec is June–September.
Based on BEAUPORT, QC CA (2.6km), 1995–2024. 16 years of December data.