One of the influential factors in the development of tourism and attracting tourists is having favorable climatic conditions and knowing the appropriate times for climatic comfort to select that area as a tourist destination. The aim of this research is to examine the climatic comfort of tourism in the protected areas of Zao Alif and B, Looh, and Jahan Nama using the Tourism Climate Index (TCI) over a thirty-year study period (1992-2022). The calculation of the index was performed using climatic data obtained from the synoptic stations located in Gorleston Province. After analyzing the data and preparing a climatic comfort map for all months of the year using the Inverse Distance Weighting (IDW) method in environment of ArcGIS Software . the area was zoned. The results showed that in Golestan Province, spring, summer, and autumn (October) conditions are more suitable for tourism compared to winter. Furthermore, the Zav A protected area demonstrates good and very good climatic comfort levels in spring, very good levels in summer, and good levels in autumn.. Zav B and Loveh regions, due to their close geographical proximity, also have favorable conditions for tourists in spring, summer, and autumn. Jahan Nama protected area has good conditions for tourism in spring, summer, and autumn. Based on the results, overall, winter does not provide very suitable climatic comfort conditions for tourism in these areas. The findings of this research can assist tourism policymakers and protected area managers in providing essential infrastructure and facilities to develop nature-based and ecotourism