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The temperature in Casey Key is so perfect that the changing of the seasons often go unrecognized. Casey Key enjoys a sub-tropical climate in which extreme summer and winter temperatures are mellowed by the presence of the Gulf of Mexico.

The average annual temperature is 75 degrees, while the waters of the Gulf of Mexico warm to an August high of 89 degrees, to a winter low in the 70's.

Average Temperatures throughout the year:

December through February 72.6 degrees

March through May 80.4 degrees

June through August 89.6 degrees

September through November 82.6 degrees


One of the prime reasons many vacationers choose Florida as a site to relax is for the sun and the tan it will produce. However, because our Florida sun is so intense, no matter what the time of year, you should be aware of its potential to burn you. Here's a couple of tips that should help you go home tanned without getting burned.

Make sure your children and you use plenty of lotion. Apply it liberally with much attention to your nose, knees, and the tops of your feet. The time our sun is most intense is between the hours of 11a.m. and 2p.m. For the time you should stay in the sun while your here try this:

Day One

Day Two

Day Three

Day Four

Day Five

Day Six

Day Seven

10 minutes

15 minutes

25 minutes

35 minutes

50 minutes

75 minutes

105 minutes