August in Sanmenxia averages a daily high of 31.4°C with nights around 21.7°C. Expect roughly 8.5 wet days totalling 90.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sanmenxia is March–May.
Based on YUNCHENG, CH (32.6km), 1995–2024. 24 years of August data.