A passive single-slope solar distillation unit was designed with separate condenser to enhance the condensation rate and improve the system's overall productivity. To further boost the condenser's efficiency, V shaped external fins were added. The mathematical model of the proposed design has been developed and validated experimentally. Finned condenser helps to enhance the rate of heat rejected from condenser to ambient which helps to increase the overall production from solar still. For the climate of Raipur, Chhattisgarh, India (21.2514° N, 81.6296° E) numerical computation has been performed to determine the thermal performance of the proposed solar still with finned condenser. For a typical day in summer the proposed design gives 6.30L of distillate output. The daily distillate output given by proposed finned condenser SS is 16.7% more than the daily distillate output given by SS having separate condenser without fins.