August in Guiyang averages a daily high of 27.9°C with nights around 19.7°C. Expect roughly 11.7 wet days totalling 127.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Guiyang is August–September.
Based on GUIYANG, CH (1.6km), 1995–2024. 18 years of August data.