Abstract: Single slope solar still utilizes solar distillation technology to clean water from brackish water was investigated. The clean water output of solar still depends on the intensity of sunlight and how well the different mediums in solar still transfer the heat energy around. Thus, the temperature distribution in the single slope solar still was analysed using the explicit finite difference method. Side view of solar still is aligned with a mesh system, which accommodates nodes and specific equation to calculate the temperature at the next time-step for every derived node. Simulation result showed the trend of heat transfer process developing from the basin of solar still to the glass cover and the temperature recorded was about 65°C during 4 h of simulation time.