Some days will be warmer than others, but you can head to the water parks with confidence most afternoons. Many of the area’s resorts, including all Disney-owned properties, heat pool water to a comfy 80 plus degrees, so you can swim with ease. Disney’s on-ste water parks, Typhoon Lagoon and Blizzard Beach, are heated as well, with the exception of the Shark Reef attraction, which is kept at the chilly temperature required by the marine life it houses.