September in Saijō averages a daily high of 29.2°C. Expect roughly 9.3 wet days totalling 144.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Saijō is April–May.
Based on MATSUYAMA, JA (37.7km), 1995–2024. 22 years of September data.