Florida experiences more hurricanes than any other state in the U.S., and these storms can bring large amounts of rainfall that lead to flooding and other serious impacts. However, modern weather records are too short to fully understand how hurricane rainfall has changed over time or how it might be influenced by broader climate patterns. We used growth rings from trees in peninsular Florida to build a record of tropical cyclone rainfall going back about 500 years. These trees grow more during wet years and less during dry years, especially in the part of the wood that forms late in the growing season, when most hurricane rain falls. By measuring this latewood growth, we were able to estimate past hurricane rainfall year by year. We found that tropical cyclone rainfall in Florida has changed over time, with some long periods of more intense storms and other times that were much drier. Our results show that extremely rainy years from hurricanes have become more frequent in the last 100 years, which matches recent trends of slower-moving and stronger storms. This long-term perspective helps us better understand past storm activity and could improve how we prepare for future hurricane risks in Florida.