July in Sanmenxia averages a daily high of 33.3°C with nights around 23°C. Expect roughly 8.9 wet days totalling 102.7mm. 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 July data.