Qiyun Mountain is accessible year-round, but spring and autumn offer the best conditions. Spring brings green hillsides and mild temperatures; autumn gives clear skies and the red-gold foliage that sets off the already-reddish sandstone cliffs particularly well. Summer is hot and humid, and the mountain's narrow cliff paths can feel airless in July and August; mist is common but not unpleasant since the low cloud intensifies the atmosphere.
The mountain sees far fewer visitors than nearby Huang Shan, which means there is no real rush season in the sense of genuinely crushing crowds. The main Taoist festival periods — particularly around the Xuantian Shangdi's birthday on the third day of the third lunar month — bring pilgrims and a more intense devotional atmosphere that is worth timing a visit around if you have the flexibility.