January in Bletchley averages a daily high of 8.1°C with nights around 2.1°C. Expect roughly 14.6 wet days totalling 60.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Bletchley is June–September.
Based on OXFORD, UK (44.4km), 1995–2024. 30 years of January data.