December in Blois averages a daily high of 8.3°C with nights around 3°C. Expect roughly 14.4 wet days totalling 69.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Blois is May–September.
Based on TOURS, FR (48.2km), 1995–2024. 30 years of December data.