January in Barnsley averages a daily high of 7.2°C with nights around 2.2°C. Expect roughly 16.9 wet days totalling 75.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Barnsley is June–September.
Based on SHEFFIELD, UK (18.8km), 1995–2024. 30 years of January data.