Abstract
In this study, we analyzed the difference of the air temperature in the urban area of Hiroshima among calm, sea breeze and land breeze by the observation. The summary of the results is shown below. 1) In the calm period, the air temperature in the urban area rises. However, the air temperature is slightly lower in green belt and around the river. It is caused by the influence the micro-scale climate. 2) In the sea breeze period, the air temperature of urban area lowers inversely as the distance from the coastline. In addition, the air temperature lowers around the river, since it becomes a way of the wind. It is the phenomena of the meso-scale.
