Air that is warmer is able to evaporate more water into the atmosphere. An air mass with more water vapor available to precipitate will naturally create more precipitation.
Explanation:
Most of South Florida has a tropical climate. There is a defined rainy season from May through October, when air mass thundershowers that build in the heat of the day drop heavy but brief summer rainfall. In some years the dry season becomes quite severe and water restrictions are imposed to conserve water.
Summer is, as usual, the rainiest season because of thunderstorms, but also because of the contribution given by hurricanes, Also another reason is how close Florida is to the ocean and the humidity and heat when ever it's summer and hot out, so I believe that's why it rains the most in Summer than winter
