http://www.mouseketips.com
Disney heats their pools year-round, so bring your swimsuit, even in the winter. Florida has days in the high 80s and last year, in the 90s, even in December, so add that to a heated pool and it's a perfect time for a Disney swimsuit.
Disney World keeps the pools warm, so it's really just a matter of whether you can tolerate the air temperature. The typical, average high temperature in central Florida never drops below 70 degrees, so for most travelers, this is warm enough!
