We just went this year the week after thanksgiving..that Sat to the following Fri. The Sunday was warm enough to swim, as was Monday, but it started to rain mon and tues, then turned cooler. We had 1 swim day. You really need to pack for all seasons. We wore shorts the first few days, capris and short sleeves, with a jacket in the evening the next few, then jeans, sweatshirts and a jacket. It never got cold enough to need fleece or hats or gloves for us (we're from Chicago area), but you never know what the temps will be. Its a great time to go though, and we'll be there next year as well!