Abstract: Assessment of solar resources at a potential site is a primary step in investigating the feasibility of the site of a solar PV power plant. There are well-established empirical models in literature for determining global horizontal irradiation and direct normal irradiation of a site for pre-feasibility studies. These models, however, use data like maximum sunshine hours, extra-terrestrial radiation values etc. which are often unavailable due to lack of ground-monitored meteorological stations, especially at remote sites. This study develops models based on average temperature and relative humidity and compares them to well-established models using statistical tools for performance evaluation of solar data prediction for a case study location. The study concludes that two of the developed models are at par with the established ones and can be used alternatively for the case study location.