January in Jian’ou averages a daily high of 15.1°C with nights around 7°C. Expect roughly 9.5 wet days totalling 65.9mm. 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 January data.