Brrr!! We have gone several times in January (includeing the past two). I would suggest you pay attention to when we go, and don't go then, as they seem to have record colds (high 20's and low 30's sometimes!!). They only break their record when we come back the next year. My grands still went swimming, although they often were the only ones. Several people mentioned we must be from the north..I'm hoping it's because they figure we can take the cold, and not because they thought we were nuts! The pool is heated, so once you get in, as long as you "lay low" in the water you are alright. We had the winter jackets waiting when they got out.