The experimental densities, rho, and viscosities, eta, of aqueous solutions of N-methylmorpholine were measured over the entire composition range at temperatures from (293.15 to 343.15) K and at atmospheric pressure. The excess molar volumes V-E and viscosity deviations Delta eta were calculated from the experimental results of density and viscosity measurements and fitted to the Redlich-Kister polynomial equation. The V-E values are negative, while viscosity deviations Delta eta are positive over the entire composition range and at all temperatures.