January in Shimotsuke averages a daily high of 8.8°C. Expect roughly 3.2 wet days totalling 27.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Shimotsuke is April–June.
Based on UTSUNOMIYA, JA (15.2km), 1995–2024. 27 years of January data.