The operating temperature of solar panels is considered as an important factor influencing the performance of photovoltaic panels, directly impacted by external environmental conditions. The main focus of this paper is to examine the combined impact of solar irradiation and wind velocity on the operating temperature of a solar panel, in order to accurately assess their energy efficiency. This research is based on a mathematical relationship linking the temperature of the system studied to various climatic parameters, enabling us to identify the main elements characterizing the energy properties of the analyzed PV panel. The results show a significant correlation between variations in wind speed and solar radiation on solar panel performance. A 35.8% drop in operating temperature is observed when wind speed is increased from 1 m/s to 10 m/s, while a clear improvement for the convection coefficient is observed, rising from 9.53 to 44.27 W⋅m−2.K−1 in the same range of wind velocity variation. In parallel, the effect of variations in solar irradiance received on the studied panel’s performance is also examined. It is noted that an increase in solar radiation results in a direct improvement in electrical efficiency, provided that operating temperatures remain close to moderate values, near to normalized test parameters.