September in Mianyang averages a daily high of 25.6°C with nights around 18°C. Expect roughly 12.2 wet days totalling 149.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Mianyang is March–May.
Based on HANZHONG, CH (33.1km), 1995–2024. 23 years of September data.