Swirl stabilized flames are increasingly used in many combustion applications due to their wider flame stability, less harmful emissions, and better turn-down ratio. Lean premixed combustion was considered to be an emerging technology to achieve near-zero harmful emissions. The effect of swirl or rotating fields generated by either passive or active swirl generators has been studied by many researchers. Particle Image Velocimetry (PIV) was used to measure the three-dimensional flow field at the exit of the burner. PIV measurements were validated using a bunsen burner with an exit diameter of 12 mm. Swirl burner with a swirling intensity of 1.5 was maintained at a steady flow rate. PIV measurements were performed in both the r-z and r-θ planes. The scheimpflug method was used to measure the instantaneous velocity in the r-θ plane. The effect of swirl on the turbulent flow field was investigated for different swirl numbers of 0.4, 0.7, and 1.5 at 300K and 1 bar. For all the swirling flow cases, central re-circulation, and inner/outer shear layers were observed. Integral length scales were estimated, and they were smaller for the regions where the turbulence fluctuations are higher. All the fluctuation components of the velocities are higher for S=1.5 indicating that it may result in broader and compact flame compared to other swirl flow conditions.