An attempt has been made for the experimental evaluation to study the effect of the hexagonal finned surface on the local heat transfer coefficients between the impinging circular air jet and flat plate. Reynolds number is varied between 7000 and 30000 based on the nozzle exit condition and jet to plate spacing between 0.5 to 6 times of the nozzle diameter. The fins used are in the form of hexagonal prism of side 2.04 mm and height of 2 mm spaced at a pitch of 7.5 mm.on the target plate. It is observed that there is increase in the heat transfer coefficient up to 68 % depending on the nozzle plate spacing and the Reynolds number.