Isfahan Province is located in central of Iran. It has different climate conditions including arid in the East، central and North of the province، Mediterranean Climate to humid in the West and southern part. Generally، this province has a hot and dry climate in summer and cold in winter.This province has natural and cultural attractions، it has a high potential in attracting visitors. But this potential has not been well exploited. To promote tourism in this area، we need to specify proper times and places for visitors. Among the visitors’ basic needs knows about the climate and proper times for traveling. In this study، proper times and places for visitors have been specified through using Tourism Climate Index TCI and GIS potential in interpolation، generalizing point data to scatter data and combining maps. The findings of this study indicate that the best time of year to attract visitors to this province is October، followed by May and April. January، February، March، July، August and December are the worst months. Also، the central part of the province has better conditions to attract visitors than the other part as far.