December in Boli averages a daily high of -8.9°C with nights around -17.9°C. Expect roughly 5.2 wet days totalling 8.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Boli is August–September.
Based on JIXI, CH (59.5km), 1995–2024. 26 years of December data.