Abstract: According to the temperature, wind speed, relative humidity data from several regional automatic meteorological stations in Shenzhen, the human comfort index and the days on different comfort levels were calculated by a human comfort index scheme, and the influences of urban landform, road network density and population density on human comfort were analyzed. The results show that the people feel more comfortable in the coastal area than in the inland of Shenzhen. The annual comfortable days are about 7-9 months in Shenzhen. The hot days are about 2-3 months in summer, while that of cold days are about 30 days in most areas in winter. According to the variation of daily human comfort index, the effect of geographical location and underlying surface on the index is significant in summer than in winter. Besides the above elements, topography, sea land distribution and urban planning could also impact the human comfort. The summer heat-hot days are in a logarithmic relation with elevation, road cover area and population density by a correlation analysis method. However, it is not comfortable in the eastern Shenzhen where hot days frequent because of low population density and small road cover areas, which is relate to the weak annual mean wind speed in this region.

Key words: font-family: "Times New Roman", mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, Human comfort')">mso-fareast-font-family: 宋体">Human comfort, Road cover area, Population density