 This study investigates the seasonal variability of surface urban heat island, Suhi, in Tehran metropolitan area, Iran, using Terra moderate resolution imaging spectroradiometer, MODIS, and Landsat 8 thermal infrared sensor, TIRS, data. The study finds that an inversion of the Suhi phenomenon, known as surface urban cool island, exists at daytime with maximal value of urban rural LST difference of minus 4K in March. The maximal value of Suhi at nighttime is 3.9K in May. When using indicators of urban agriculture and urban water LST differences, the maximal value of Suhi is found to be 8.2K and 15.5K, respectively. Both results are observed at daytime, suggesting the role of bare soils in the inversion of the Suhi phenomenon with the urban rural indicator. Maximal correlation is observed between night LST in elevation in spring, night LST and IS in spring, night LST and albedo in winter, and day LST with fractional vegetation cover in summer. The relationship between all surface properties with LST possesses large seasonal variations, and thus, using these relationships for Suhi modeling may not be effective. However, the correlation between elevation and IS may be useful to simulate the Suhi at night. The study suggests that Suhi studies require the acquisition of remote sensing image data at both daytime and nighttime and careful selection of Suhi indicators. This article was authored by Cyrus Hashimi, Kihei Owang, Ali Darveshi, and others. We are article.tv, links in the description below.