This study attempts to accomplish this for two counties on the Kenyan shore of Lake Victoria, Busia and Homa Bay, as well as for surrounding areas. The current and future suitability of this region for major agricultural crop was evaluated using a range of methods. This study therefore provides a rough indication of the impacts of climate change on the production of major crops in the study region. It also presents an evaluation of which climatic factors are the most likely constraints for production of the various crops. Yet the results of this study should not be taken as completely accurate, because of the host of unknowns about essentially all important factors of climate, soils and cropping systems.