December in Bolton averages a daily high of 8.1°C with nights around 1.9°C. Expect roughly 19.2 wet days totalling 121mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Bolton is May–September.
Based on PRESTON MOOR PARK, UK (27.7km), 1995–2024. 24 years of December data.