May in Jian’ou averages a daily high of 29°C with nights around 19.9°C. Expect roughly 16.1 wet days totalling 264.5mm. 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 May data.