Analysis and Estimate Tourism Climate Index of Mazandaran Province, Using TCI Model Amir Gandomkar 1 , Nasim Mohseni 1 1 Najafabad Branch, Islamic Azad University, Najafabd, Iran Abstract. Role of clime is significant on life, health , human comfortable and also tourism development .tourists has try to select time for tourism that has most comfort from climate , and also select places that have suitable weather condition . The aim of this study is determine the best time and location for tourism in Mazadaran province. In this study with statistic analysis of meteorologist parameters ( temperature , raining , moisture , speed of wind , sun radiation ) with using TCI model in metrology stations of Mazandaran Province and adjacent stations , preparation and combination of maps during 20 years period as monthly has considered to analysis time and place climate comfort in different areas of Mazandaran . the results has presented in all place of Mazandaran Province , June Month has the best condition for tourists presence and after that May, July, August, September, have similar specification of tourism condition climate and have the best condition for tourism comfort. Keywords: Tourism comfort climate, Mazandaran , daily comfort, 24 hours comfort 1. Introduction One of the most important factor on human health and comfort , especially in tourism discussion is weather condition .and weather condition of one region is is one of the most effective factor in attract or repulse of tourist. [1] According to Hunter [2] believe this condition is from interaction between environment and tourist, certainly its necessary for correct programming of tourism in order to integrated development and considered either request & distribution and also organizational and framework factors. Development stability is one of the most necessary case that have the main role in tourism programming because the most tourism development designs is according to attractions and related activities with natural environment , cultural heritage , and regional cultural works and in case of their destruction , will lost attraction tourism regional and couldn’t considered as tourism center. Mieczkowski [3] for the first time with present TCI Model with using climate parameters , has calculated tourism comfort condition of 453 metrology stations and is generalized the results during 12 month of year for whole of world . Scott & Mc Boyle [4] with using TCI index analysis in 17 area of North America , has determined the peak state of Canada cities in summer . Hamilton and his colleagues in 2005with using simulation model stated with increase of Dioxide Carbone amounts and climate changes in global level , travel and residence of tourists has increased more toward geographical heights and width. Matzarakis [5] with point to climate condition before and during travel (trip) has considered this factors important in relation with tourism industry programming and considered the effects of atmosphere on health and comfort of human temperature. In other study that done by Matzarakis [6] in Greece and study the physiology thermal index of human body and reached to this conclusion that condition of August is suitable with human physiological index. 6 2011 2nd International Conference on Business, Economics and Tourism Management IPEDR vol.24 (2011) © (2011) IACSIT Press, Singapore