September in Utsunomiya averages a daily high of 27.3°C. Expect roughly 12.9 wet days totalling 216mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Utsunomiya is April–June.
Based on UTSUNOMIYA, JA (2.4km), 1995–2024. 25 years of September data.