We went last year about that time. Depending on where you are traveling from, it might be warm enough. For us, being from Indianapolis, it would have been fine. That is nearly the ideal time to go, in my opinion; it is not so hot that you dehydrate, but still warm enough that you will enjoy going to the pool. We are going just before Christmas this year. I think I will probably pack swimming stuff, since my son loves to swim, and it might be warm enough (this past summer, he has been in the pool at times I would not have gone at his age).