May in Donghai averages a daily high of 28.5°C with nights around 23.1°C. Expect roughly 12.8 wet days totalling 256.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Donghai is November–February.
Based on SHANWEI, CH (33.5km), 1995–2024. 24 years of May data.