April in Rui’an averages a daily high of 21.7°C with nights around 14.3°C. Expect roughly 14.1 wet days totalling 148.9mm. 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. 19 years of April data.