Is the swimming pool heated at LEGOLAND Beach retreat? Yes. The pool is heated year-round to approximately 82-85 degrees Fahrenheit. Was this article helpful? Related articles What is there to do at LEGOLAND Beach Retreat? What are the benefits of staying at LEGOLAND Beach Retreat? What does my stay at Pirate Island Hotel include? Are towels available for rent or use in the Water Park? How far is the hotel to LEGOLAND Theme Park?