Droplets evaporating on hot surfaces has many applications including drying of dishes and paint. Evaporation rate and deposition of particles withheld in the fluid is of great importance in both cases. As a first step to investigate how the drying rate and deposition mechanisms can be controlled, this work aims to investigate how the external flow around a droplet influences the evaporation rate. Natural convection of the surrounding fluid caused by heated plates of different widths is considered and the effect of the heat and mass transfer mechanisms on the evaporation rate is investigated.