Experimental densities, dynamic viscosities, speeds of sound, and relative permittivities for six binary mixtures of water + alkanediols (propane-1,2- and -1,3-diol and butane-1,2-, -1,3-, -1,4-, and -2,3-diol) were measured across the whole composition range and in the temperature range (298.15 to 338.15) K. The deviations in dynamic viscosities, excess isentropic compressibilities, and deviations in relative permittivities were also calculated and fitted to a Redlich-Kister type equation. The partial molar volumes at infinite dilution for the water in six binary mixtures and the differences in these values among various diol isomers were calculated and examined to ascertain structural information on the water molecules around various diols. The variation of the Kirkwood correlation factor was also examined across the whole composition range of the mixtures.