A new electronic music festival called Temper will debut at Petco Park in San Diego on Wednesday, December 30, 2026, led by a lineup headlined by Zeds Dead and Sara Landry.

The festival is a production from LED Presents, the San Diego-based electronic music promoter that unveiled the event via its official Instagram account. Temper will span three stages built across the Petco Park field and the surrounding area, with a press release describing "thoughtfully curated spaces" and immersive production. The event is strictly 18+.

The inaugural lineup pairs established names with emerging talent. Zeds Dead, the Canadian dubstep duo, and Sara Landry, the hard techno artist whose momentum has made her one of the genre's most booked names, top the bill. They are joined by Crankdat, Whethan, G Jones, Mary Droppinz, Distinct Motive, and Levity, who will play a b2b set — a back-to-back DJ performance where two artists alternate behind the decks — with Richard Finger. Ninajirachi, a DJ set from Tiffany Day, Starjunk 95, and Bad Girl Bailey round out the announced names.

The undercard goes deeper. HELLGNAR, Connor Q, Gaszia, Jovella, SEES00000, Snuffy, Madam X, Julia Cooper, and Kurei fill out the lower portion of the poster (Electric Mode). The festival's official website at temperfestival.com hosts the lineup page, which indicates that more acts are still to be revealed.

Ticket sales arrive in two stages. A presale begins on August 10 at 12 p.m., followed by a general on-sale on August 11 at noon PT. Both windows were confirmed by Billboard.

For San Diego's electronic scene, a new festival from LED Presents is notable — the promoter has been a consistent presence in the city's club and venue circuit, and Temper represents its move into large-scale stadium-tier production. A late-December date also places the festival in a window that few major electronic events currently occupy, giving it a clear slot on the holiday-week calendar.

What the full lineup will look like remains open, but the first announcement already spans dubstep, techno, and several sub-genres in between. With four months to go before doors, the remaining acts could push the bill in any direction.