December in Le Mans averages a daily high of 7.9°C with nights around 2.4°C. Expect roughly 16.5 wet days totalling 86.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Le Mans is June–September.
Based on ALENCON VALFRAMBERT, FR (49.8km), 1995–2024. 30 years of December data.