Big Bay Boom 2021 | San Diego 4th of July Fireworks

The Port of San Diego’s Big Bay Boom fireworks show, a legendary event for Southern California, will take place at 9:00 pm on Sunday, July 4, 2021 over San Diego Bay. The 20-minute fireworks spectacular is synchronized to a custom music soundtrack created by 101.5 KGB FM and hear exclusively on the station. Viewers can listen on their radio, mobile device and event smart speaker.

  • Listen on your radio at 101.5 KGB FM
  • Listen on any mobile device with the iHeartRadio app
  • Ask your smart speaker to play K-G-B-F-M on iHeartRadio

The fireworks show will also be telecast on Fox 5 San Diego.

Fireworks will be discharged from four barges placed strategically around San Diego Bay. Barge locations will be off the shorelines of Shelter Island, Harbor Island, North Embarcadero and South Embarcadero.

“The Big Bay Boom this year will be our 20th and we hope it welcomes everyone back from a year under COVID,” said Sandy Purdon, Executive Producer of the event. “Besides being one of the largest July 4 fireworks shows in America, it supports the Armed Services YMCA and our military families in San Diego.”

Year after year, the Big Bay Boom has been recognized as the largest fireworks show in Southern California. MSN rated it one of the most spectacular fireworks shows in America in 2019. Last year, the show was canceled due to the pandemic, and a television special highlighting the best moments of past Big Bay Boom events aired on Fox 5 San Diego.

The Big Bay Boom can be viewed from Shelter Island, Harbor Island, Spanish Landing, North Embarcadero, South Embarcadero, Cesar E. Chavez Park and Coronado Tidelands Park. Parking areas fill up early and the Port of San Diego strongly encourages the use of public transportation or ride share. The Metropolitan Transit System (MTS) will be providing expanded train, trolley and bus service and is offering “Friends Ride Free” - where a friend may ride free with a fare-paying customer on all MTS routes on July 4, 2021.

The event producers are monitoring State and County public health guidance. For more details, including information for those wanting to view the fireworks from their boats, please visit

A list of ALL San Diego County 4th of July Fireworks locations can be found HERE.

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