The weather around Tampa, Clearwater and St. Petersburg is very pleasant with warm Gulf breezes. However during the summer months it is very hot with near 100% humidity and frequent thunderstorms which often brings high winds, heavy rain and even hail stones.
Despite this, the Tampa area averages 361 days of sunshine a year which is hard to beat.
Like Orlando, one of the best times to visit is in May when the temperatures are still high but the humidity and rainfall are lower.
There is a very definite rainy season between June and September, for the rest of the year rainfall is low.