May in Hải Dương averages a daily high of 30.6°C with nights around 25.5°C. Expect roughly 11.1 wet days totalling 176mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hải Dương is November–January.
Based on PHU LIEN, VM (34.9km), 1995–2024. 22 years of May data.