Marginal areas and islands of the Persian Gulf are located in a warm and humid climate with high absolute humidity; areas with an unfavorable climate among whose characteristics are minimum precipitation and water shortage, abundant water vapor, low relative humidity, high radiation levels , Dust, … , which, considering urban development plans and the creation of new towns and industrial areas  associated with increase in population, are of great importance in terms of energy costs in an unfavorable climate. In the past, indigenous people provided more or less tolerable conditions due to the presence of Hara forest vegetation and the use of indigenous techniques against undesirable climate. However, due to new structural changes, this approach is accompanied by the Increasing cost of energy over the year. The purpose of this paper is to identify the potential of creating desirable climatic conditions in Hara forests in the Persian Gulf, with an emphasis on reducing energy costs. The method of research is descriptive-analytical, using existing statistics of meteorology and application of bioclimatic human models. This article tries to introduce the development and understanding of these forests as one of the ways to create the optimal local and regional climate in the Persian Gulf region for the desirable human development, so that vegetation is preserved in the UAE in the southern region of Persian Gulf with great costs, while in the northern regions of the Persian Gulf (Iranian section), this potential can be developed at the lowest cost in the margins and islands, in which terms it is incomparable with the south.