Hello.Kunming's climate is mild all year round. It is known as 'Spring City'. March to October is the best season to visit. If come in early March, you can still see the snow capped in mountains. In April and July, there are many festival of local minorities (Water-Sprinkling Festival of Dai is in April, Torch Festival is in July). May to October is the rainy season, it showers but not last long time.