At the peak of summer, the average high is 89° F (32° C). We don't have any super-highways or urban sprawl to radiate the sun's heat. Not only that, but our islands are surrounded by cooling ocean waters.When is the best time to visit the Florida Keys?
Traditionally, the highest potential for storms is between Aug. 15 and Oct. 15. However, the daily weather during this period tends to be some of the most beautiful of the year, and surrounding waters warm and calm.What's the lowest temperature ever recorded in Key West?
The all-time record low for Key West is 41° F (5° C) set in 1981. Divers or snorkelers usually get by with a “shortie” wet suit. During these winter months, it almost never rains. By late May, however, the season’s first thundershowers start popping up.