he Coiflet wavelet-homotopy method is extend to analyze the problemof natural convection in cavities under the effect of an inclined external magneticfield. The Coiflet wavelet solutions for a wide range of various physical parameterssuch as the Grashof number, the Hartmann number and the angle of the magneticfield are obtained via a very efficient homotopy iteration method. Rigid comparisonwith previous studies shows excellent computational efficiency and accuracy of theproposed method.