September in Kashihara-shi averages a daily high of 28.7°C. Expect roughly 11.4 wet days totalling 161.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kashihara-shi is April–June.
Based on NARA, JA (21.6km), 1995–2024. 26 years of September data.