Electrochemical measurements like potentiodynamic polarization and cyclic voltammetry have been carried in absence ( dried) and presence of moisture (undried) in (Na, K) NO3 and (Li, Na, K)(2) SO4 melts at 300degrees and 550degreesC, respectively on platinum, nickel and iron metals surfaces. The cyclic voltammetry study on iron revealed an increase in the cathodic process for the undried melt in comparison to a dried melt. To ascertain the effect of moisture on hot corrosion, the oxidation rates of iron and nickel were determined by Tafel extrapolation. A proportionate increase in oxidation rates in the presence of moisture in both systems suggests that moisture increases the oxidation reaction of metals. Cyclic voltammetric measurements suggest that the presence of moisture in the melt enhances reduction of the nitrate and sulphate ions, which apparently increases the hot corrosion reaction in the system.