Abstract: According to the daily average temperature,relative humidity,and wind speed observation data from 9 meteorological stations in Wuhan urban circle,the human comfort indexes were calculated and the temporal and spatial distribution characteristics of human comfort index in Wuhan urban circle were analyzed.The results show that people feel comfortable all months except January.The temporal characteristics of human comfort index in 9 cities are analyzed and the results suggest that human comfort indexes of 9 cities show increasing tendencies.As to the spatial distribution,the average number of comfortable days during 1960 to 2016 in the north is less than that in the south,which shows that it is hot in south areas while it is cold in north areas.The number of comfortable days increased during the past 57 a.Especially,the number of comfortable days is more than the average days during the past 57 a when entering into the 21st century.Meanwhile,the number of hot days increases slowly and the number of cold days is decreasing year by year.From the statistical number of comfortable days for tourism,it is suitable for traveling in April,May,September,and October in Wuhan urban circle.In spring and summer,the number of comfortable days for tourism increased from south to north.While in autumn and winter,it is the vice versa.

Key words: Human comfort, Number of hot days, Number of cold days, Tourism