January in Hamilton averages a daily high of 7.3°C with nights around 1.7°C. Expect roughly 19 wet days totalling 97.4mm. 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. 25 years of January data.