Surface tension sigma of aqueous solutions of n-propyl alcohol was measured in the temperature range between 278 and 303 K using Wilhelmy plate method. The surface entropies and enthalpies are calculated. The results are interpreted in terms of specific interactions of the hydrophobic parts of the molecules adsorbed at the interface and possible interaction of these molecules with the bulk. The results are compared to those obtained previously for water+tert-butanol solutions.