September in Himimachi averages a daily high of 26.7°C. Expect roughly 13.2 wet days totalling 217.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Himimachi is May–June.
Based on FUSHIKI, JA (8.3km), 1995–2024. 27 years of September data.