Taking into account the local weather in Busia is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually February and March with an average temp of 73°F, while the coldest months are June and November with an average of 70°F. The rainiest months in Busia are April, May, March, and November, with each month seeing an average of 12 inches of rainfall.