May in Ji’an averages a daily high of 28.5°C with nights around 20.2°C. Expect roughly 15.3 wet days totalling 233.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ji’an is October–November.
Based on JIAN, CH (1.2km), 1995–2024. 24 years of May data.