Anyway, most of the city's tourist attractions are historical sites that are not affected by the change of season. Therefore, tourists can come to Beijing all year round. January is the coldest month with an average temperature of only 4.5ºC, while July is the hottest with an average of 28ºC. In autumn and spring, jeans and a sweater are usually enough. T-Shirts and shorts and very high factor sun cream are for the summer.