Is it hot to go to Yunnan in September?

Answer: Not hot. Traveling to Yunnan in September is a good choice as the temperature gradually drops but is still mild and humid. Although the average daytime temperature is 23°C, the temperature difference between morning and evening is large, so it is recommended to wear cotton and linen fabrics. In addition, Yunnan belongs to the plateau, and the ultraviolet rays in autumn are still very strong, so it is recommended to bring sunscreen.