January in Grimsby averages a daily high of 7.2°C with nights around 1.2°C. Expect roughly 13.9 wet days totalling 53.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Grimsby is June–September.
Based on WADDINGTON, UK (59.6km), 1995–2024. 29 years of January data.