Wind energy is a source of renewable energy that can be converted to electricity using a wind turbine. The typical lifespan of a wind turbine is at least 20–25 years. However, regular monitoring and preventive maintenance are required to ensure optimal performance and to extend the working life of wind turbines. Blade erosion and fatigue are the main structural issues which degrade wind turbine efficiency and lifespan. One method to identify the causes of these structural issues is computational fluid dynamics (CFD) that can be used to investigate relevant physical parameters affecting wind turbine performance. The current study investigated wall shear stress (WSS) or the force per area exerted by the wind close to the surfaces of the turbine blades and simulated the WSS at various points on the blade. The 3-parameter lognormal distribution that represented WSS probability density functions revealed that wind speed, rotational blade speed, and WSS were positively related, with the highest WSS levels occurring at the blade's leading edge, particularly in the region near the blade tip. Based on these findings, regular preventive maintenance plans should carefully monitor the blade leading edges, while protective coatings should be applied. These strategies would help to prevent blade erosion and fatigue, ultimately improving the efficiency and lifespan of the wind turbine. However, further research is needed to refine these CFD simulations and to validate the results based on additional experimental data.