Sweating in February?

So, how can it be that although it's February on the calendar, yet we're sweating bullets.  Roger and I actually commented that we were so warm, we had to get in to the shade for a while.   The thing is, it is hot.  It's 83+ and  sultry.  We're loving it.  After a grueling day at Epcot, we came home and hopped in the pool.
It's tough being on vacation...really.

Pizza pool party