September in Uwajima averages a daily high of 29.1°C. Expect roughly 11.5 wet days totalling 233.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Uwajima is April–May.
Based on UWAJIMA, JA (1.4km), 1995–2024. 25 years of September data.