In the present paper, the regional model (MM5) has been used to evaluate the performance of three cumulus parameterization schemes (CPSs, namely, the Anthes-Kuo, Bette-Miller and Grell) over the Indian summer monsoon season of 1998. The model was integrated at 90 km horizontal resolution for the peak monsoon period of July, 1998. The initial and boundary conditions were taken from the National Center for Environmental Prediction (NCEP) reanalysis available at 2.5° horizontal resolution. The performance of these CPSs has been examined using precipitation, wind, surface air temperature and heat – moisture data. Features of the Indian summer monsoon are found to be fairly well simulated by these three schemes; however, some differences are found in the typical features of the Indian summer monsoon. The strength of low level westerly jet, the cross equatorial flow, and the tropical easterly Jet have emerged clearly in the simulation using Grell compared to other CPSs. The Grell cumulus convection scheme shows ascending motion over whole tropical monsoon region and descending motion in mid latitude and is found to show close resemblance with the reanalysis data. The model simulation with Kuo cumulus scheme shows descending motion over tropical region, which is found to be unrealistic during monsoon and provide under estimation of rainfall over the Indian region. Strong upward motion over oceanic region by the model using Betts-Miller and Kuo schemes is also found to be unrealistic. The simulation of heat and moisture budget, and distribution of rainfall during monsoon period over Indian subcontinent are found to be improved considerably using Grell scheme as compared to other CPSs, whereas using Kuo scheme, rainfall is found to be underestimated over Indian subcontinent.