January in Rui’an averages a daily high of 13°C with nights around 5.9°C. Expect roughly 10.5 wet days totalling 60.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rui’an is October.
Based on RUIAN, CH (1.1km), 1995–2024. 20 years of January data.