September in Jian’ou averages a daily high of 32°C with nights around 22.8°C. Expect roughly 8.4 wet days totalling 78.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jian’ou is October–November.
Based on NANPING, CH (55.4km), 1995–2024. 30 years of September data.