An experimental study was performed to investigate the local convective heat transfer from a vertical heated surface to an obliquely impinging circular free-surface jet of transformer oil. The effect of jet inclination was examined in the range of Reynolds number between 235 and 1745 with jet angle from 90 to 45 deg. Maximum heat transfer coefficient was found to decrease with the increasing of jet inclination, while its location shifted to the upstream side. Correlations were developed to predict the variations of the magnitude and the location of the peak heat transfer. Profiles of local Nusselt number were measured both in x and y-axes. The profiles along s axis displayed an increasing asymmetry with increasing jet inclination. An empirical correlation was presented for predicting the y-axis profiles. With y-axis profiles, a symmetry appeared inside the stagnation zone, but a gravity-induced asymmetry was observed outside that zone.