SeaWorld Summer Fireworks run nightly from June 13th through August 9th ! During the month of June, fireworks commence at 8:50pm during the week, and 9:50 on weekends. Jult 17- August 9th, they are at 9:50pm nightly. They will continue on Saturday nights from August 15th through September 6th at 9:50pm. A special Firework performance will occur 4th of July at 10:30, don't miss it!