The purpose of this paper is to investigate the mechanism of air temperature distribution around complicated topographical hillside. We conducted a traversing field survey in model area (City of Kawanishi, Hyogo Pref.). The results are as follows. Air temperature distribution is affected by complicated topography in addition to land use. Therefore the subjective area has a wide range of temperature compared with a large-scale park in urban area. In the daytime, the characteristic factor that affects upon air temperature distribution is the difference in solar radiation by change of topographical element. In the nighttime, that is nocturnal cold air drainage.
