We went last year on Feb 10th, and it was one of the warmest days we had, about 84 degrees!!It was wonderful. Regardless,the main pool, and lazy river are kept very warm. The ray lagoon, and dolphin swim were cooler, but if you had a full body suit on you didn't notice it!!! I was getting cold by about 5 pm, but I think it was the sunburn and cooler water made me shiver!!