The climate phenomenon has a geographical and undeniable relationship with the development of tourism and tourism purposes. To bring so many tourism destinations in the world, an area must have favorable climate. In this study, the indexes of climate, humidity, cloudiness, wind speed, and air pressure in Ahvaz were estimated during a thirty-year period (1980-2010). The results indicated that the major limitation of Ahvaz tourism hot climate is from April to October. Gradual increase in temperature and moisture in humid conditions causes the increase in contact. Humid conditions have been known to reduce the days of peace in Ahvaz from late autumn to the end of the winter. The less relative temperature, relative humidity, the more cloudiness in terms of climate was known to be established in Ahvaz. Naturally, such a time is the best destination for winter tourism. In the third period which includes a seasonal winter, there is an ideal weather condition in the region. During the first and second phases, the weather becomes a little cool, comfortable, and in a relatively fixed condition. During the spring and summer, heat and drought will drop and Ahvaz has the worst climatic conditions for tourism activities. In the autumn, the weather becomes cooler especially during the first period.