In early autumn the water at Huangguoshu drops from its midsummer peak yet stays ample, and the falls remain impressive; temperatures turn cool and the mountain air clear, making both walking and viewing comfortable. Compared with summer, autumn crowds are a little thinner and the experience calmer.
The day–night temperature gap widens in autumn and mornings and evenings are cool — bring a light jacket, and keep rain gear handy for the changeable mountain weather. For hours and openings, follow the day's notices.