Huangshan in June

Spring and fall deliver the best weather and clearest views. April and May bring blooming azaleas and comfortable temperatures around 15-20°C. September and October offer crisp air and the highest chance of seeing the famous cloud sea phenomenon. Summer is hot, humid, and packed with domestic tourists — avoid July and August unless you enjoy crowds and afternoon thunderstorms. Winter has its own magic with snow-capped peaks and fewer visitors, but many trails close due to ice. The cloud sea appears most often after rain, typically early morning between 6-9am. Check weather forecasts before your trip — clouds can obscure views for days. Peak season runs from April through October, so book accommodation well ahead. Golden Week holidays in early May and October turn the mountain into a human traffic jam.