Based on the daily average temperature, maximum/minimum temperature, average relative humidity, and average wind speed of 14 national meteorological observation stations in Zhangjiakou City and its counties (districts) in summer (from June to August) from 1988 to 2018, the apparent temperature is calculated and the distribution of climate comfort is analyzed. The number of high-temperature days and the variations of apparent temperature in Beijing and Shijiazhuang, and the advantages of summer tourism in Zhangjiakou are compared and analyzed. The results are listed below. (1) The average summer temperature in Zhangjiakou ranges from 19.6 to 22.5 ℃, relative humidity from 56% to 72%, and average wind speed from 1.8 to 2.5 m[DK]·s-1. The temperature, humidity, and wind are suitable for summer tourism. (2) The summer apparent temperature in Zhangjiakou fluctuates between 19.0 and 23.0 ℃, changing significantly with terrains. The apparent temperature at the height of 1 400-1 600 m above sea level is lower than that at 500-900 m. (3) Except for Kangbao, Guyuan, and Zhangbei, most counties (districts) in Zhangjiakou have most of their summer with meteorological elements in comfortable range. July is the month with the highest number of comfortable days in Zhangjiakou. (4) Compared with Shijiazhuang and Beijing, Zhangjiakou has the advantages of fewer high-temperature days, suitable average apparent temperature and a high proportion of comfortable days.