September in Amagasaki averages a daily high of 29.6°C. Expect roughly 10.8 wet days totalling 142.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Amagasaki is April–June.
Based on OSAKA, JA (9.9km), 1995–2024. 21 years of September data.