Malaria is a major public health threat to the African continent. Rainfall and temperature are two of the major factors triggering malaria epidemics in warm semi-arid and high altitude epidemic risk areas. The ability of the mosquitoes to transmit Plasmodium spp. is dependent upon a series of biological features generally referred to as vectorial capacity. In this study, the vectorial capacity model (VCAP) has been expanded to include the influence of rainfall and temperature variables on malaria transmission potential.