The purpose of this work is to investigate the heal and mass transfer characteristics along an inclined heated plate over which the water at room temperature flows downward as a film. To model the detailed transport processes special attention is drawn to the phase equilibrium and gas-liquid interface matching conditions. An implicit finite difference method is employed to solve the coupled governing equations for liquid film and gas flow together with the interfacial matching conditions. Evaporation of water vapor into the gas stream is examined for various conditions. The results clearly show the importance of the latent heat transport connected with film vaporization at the gas-liquid interface. In addition, it is Found that an increase in inclined angle phi, inlet liquid film thickness delta or free stream velocity u infinity causes reductions in the wall and interfacial temperatures.