September in Guiyang averages a daily high of 25.3°C with nights around 16.8°C. Expect roughly 9.5 wet days totalling 81mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Guiyang is August–September.
Based on GUIYANG, CH (1.6km), 1995–2024. 18 years of September data.