September in Takamatsu averages a daily high of 28.9°C. Expect roughly 10.4 wet days totalling 156.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Takamatsu is April–June.
Based on TAKAMATSU, JA (1.8km), 1995–2024. 21 years of September data.