May in Jianguang averages a daily high of 27.5°C with nights around 19.9°C. Expect roughly 14.9 wet days totalling 228.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jianguang is October–November.
Based on NANCHANG, CH (47km), 1995–2024. 24 years of May data.