HOW IS THE WEATHER IN FIRST WEEK OF SEPTEMBER IN HONGKONG, BEIJING AND SHANGHAI?

Well, according to the weather data, during that period of time, the temperatures of Hong Kong, BJ and Shanghai were 80 F to 90 F, 65 F to 85 F and 75 F to 85 F. The climate is warm and comfortable. So it's not necessary for you to bring thick clothes. Light jackets, jeans, T-shirts and other summer clothes are enough for you to prepare.