December in Ji’an averages a daily high of 13.6°C with nights around 5.4°C. Expect roughly 8.7 wet days totalling 45.6mm. 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. 26 years of December data.