When is the LEGOLAND Water Park closed? During operation days the Water Park opens from 10:30 am and closing times vary. For your convenience you can access a complete listing of our Water park hours HERE. Was this article helpful? Related articles When is LEGOLAND Florida open? What happens if it rains? Are towels available for rent or use in the Water Park? What are some tips to prepare my family member with a disability for a trip to LEGOLAND Florida Resort? What are the Beach Retreat Pool hours?