September in Weihai averages a daily high of 24.1°C with nights around 19.8°C. Expect roughly 5.6 wet days totalling 79mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Weihai is September–October.
Based on CHENGSHANTOU, CH (51.7km), 1995–2024. 23 years of September data.