Climate comfortable degree is an important factor that influences the development of tourism destinations. It directly affects the length of the tourism season and yearly variation of tourist traffic. In this paper, calculating the climate data in the past 25 years, it got the comfort index, cold index, effective temperature and the clothing index. Basing the comment on the tourist climate com-fort in Nanjing, it divided the fitness and periodic distribution. The results showed that; the best pe-riod of Nanjing tourism was April and October, May and September were warm and also suitable for outdoor travelling. This study provided scientific basis for the development of tourism resources and planning of scenic spots in Nanjing and also the best time for tourism.%气候条件作为旅游业发展的重要因素,不仅影响着旅游气候资源的空间分布,还影响着游客外出旅游活动的动机与旅游目的地的行为选择.本文以1985～2009年南京25年的气候资料为依据,定量计算南京各月舒适度指数、风寒指数、有效温度和着衣指数,以此对南京旅游气候舒适性进行划分与评价.结果表明:南京旅游最适宜期为4月和10月,5月、9月人感温暖,也适宜户外旅游,7月、8月为最不适宜户外旅游活动的月份,并提出了相关着衣建议,以期为南京旅游规划与开发以及游客选择南京作为旅游目的地的最佳旅游时间的确定提供定量依据和理论参考.
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