Sept. is the month we almost always go, we've been just about every week in that month at one time or another. We started because it was just before school started so it was a late August/early Sept. window for a last trip. Then it just became habit, it was easier to get a room, they usually came out with free dining and it wasn't really crowded. It is a tad warm, we are from Georgia so warm is subjective for us. It rains, but I've yet to find a time when it hasn't rained at least once during a trip for us. I've been Oct., April, Sept., Aug., and am going this May, there is no bad time to go.