I will go to Kunming tomorrow and start from Guangzhou. I don't know what the weather is like there and what clothes to bring.

Summer in Kunming is cool in the morning and evening and hot at noon. It was rainy season for a long time. If it rains, it will be very cold. Other clothes will be the same as those in Guangzhou. Just take two more coats and a pair of pants in case you catch cold in rainy days. If you are not afraid of trouble, take an umbrella. Yunnan is famous for its changeable weather. If you are prepared, you won't be afraid of sudden rain. If it is sunny, it can also be used to block out the sun. The most important thing is to bring sunscreen, because ultraviolet rays are too strong and it is easy to get tanned.