What is the water temperature at the LEGOLAND California Water Park? The water throughout the LEGOLAND® California Water Park is heated to approximately 80°F (27°C) to ensure a comfortable experience for guests of all ages. Was this article helpful? Related articles Can I visit LEGOLAND California on one day and the Water Park on another day? How deep is the water in the LEGOLAND California Water Park? Do guests staying at the hotels get provided with towels for the Water Park? Does my LEGOLAND ticket include entrance to the Water Park? What are the check-in and check-out times at LEGOLAND California Hotel and LEGOLAND Castle Hotel?