July in Zhoushan averages a daily high of 31.6°C with nights around 24.9°C. Expect roughly 10 wet days totalling 133mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Zhoushan is October.
Based on DINGHAI, CH (9.8km), 1995–2024. 24 years of July data.