December in Hamilton averages a daily high of 7.8°C with nights around 1.6°C. Expect roughly 20.2 wet days totalling 111.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Hamilton is June–September.
Based on AUCHINCRUIVE, UK (46.4km), 1995–2024. 24 years of December data.