The Best Music Festivals in California for 2026

California's festival calendar reads like a tour itinerary: from a 70s-disco beach party in March to a reggae weekender in May, free Sunday shows under the eucalyptus in San Francisco, and a transformational bass weekend by Lake Perris in September. If you're trying to figure out which of the best music festivals in California deserve a spot on your 2026 plans, this guide walks through five festivals that span the state, the calendar, and just about every genre you'd want to soundtrack a year by.

We've ordered them chronologically so you can map them against your calendar. Each entry covers when it happens, where, who's playing, and what makes it different from the usual festival circuit — plus a link to the official festival site for tickets and the full lineup.

1. The Mustache Bash — San Diego, March 21, 2026

If you've ever wanted to spend a full day in 70s gear listening to funk and disco at the beach, the Mustache Bash is the day you've been waiting for. The festival returns to Mariner's Point Park in Mission Beach on Saturday, March 21, 2026, from 2 to 10 PM. It's a 21+ event, four stages, sixteen artists and DJs, and a hard lean into vintage disco, funk, and house — with costumes to match.

What makes it different

The Mustache Bash started as a backyard party and grew into one of San Diego's most distinctive single-day festivals. It's 2026's second year at Mariner's Point, with the beach right there and a costume scene that's half the experience. If you've done the usual Coachella-and-back routine and want something quirkier without leaving SoCal, this is the play.

Who it's for

Disco and funk lovers, costume enthusiasts, and anyone looking for a single-day festival that doesn't require a weekend of camping. Plan for full 70s regalia — flares, sequins, sideburns, the works. Tickets and full lineup at mustachebash.com.

2. Shabang — San Luis Obispo, May 2–3, 2026

Shabang is the festival that 805 locals brag about. It's held at Dairy Creek Golf Course in San Luis Obispo on May 2 and 3, 2026, and the 2026 lineup is the festival's most ambitious yet. Headliners include Grammy-nominated tech-house artist Chris Lake, indie favorites The Backseat Lovers, and synth-pop duo Magdalena Bay. Supporting acts include INJI, TOPS, Natalie Bergman, and a deep undercard of emerging talent.

What makes it different

Shabang sits at the intersection of indie, electronic, and alternative — a curated lineup rather than a kitchen-sink one. Programming runs from 2 PM to 11 PM each day. Note that on-site camping is discontinued for 2026, so plan your stay in nearby San Luis Obispo or Pismo Beach. General admission weekend passes start at $169, with VIP at $329.

Who it's for

Indie-rock and electronic fans who want the curated-festival experience without the LA crowds. SLO itself is a great weekend destination, so it pairs well with a coastal trip. Tickets and full lineup at shabangslo.com.

3. California Roots (Cali Roots) — Monterey, May 22–24, 2026

Cali Roots is the largest reggae festival in the country and one of the best music festivals in California for fans of reggae, dub, dancehall, and the broader sound-system culture. The 2026 edition runs May 22 through 24 at the Monterey County Fair & Event Center, and the lineup spans legends and modern heavy-hitters: Rebelution, Ice Cube, J Boog, Original Koffee, Collie Buddz, SOJA, Tash Sultana, Burning Spear, Skip Marley, Barrington Levy, The Movement, The Expendables, Fortunate Youth, and The Elovaters.

What makes it different

The festival sits on the Monterey fairgrounds — the same site that hosted the Monterey Pop Festival back in 1967. The setting is intimate by California-festival standards, the lineup mixes reggae royalty with modern stars, and the crowd is famously welcoming. It's an all-ages event, which is rare for a festival this size.

Who it's for

Reggae fans, of course — but also anyone who wants a festival weekend with a slower pace and more sound-system community than mainstream pop-festival energy. The Monterey Peninsula itself adds a coastal-California weekend on top of the music. Tickets and full lineup at californiarootsfestival.com.

4. Stern Grove Festival — San Francisco, June 14 – August 16, 2026

Stern Grove is the festival that San Francisco has been quietly perfecting for nearly 90 years. The 2026 season — the festival's 89th — runs every Sunday from June 14 through August 16, with shows starting at 2 PM in the eucalyptus-lined amphitheater of Sigmund Stern Grove. The 2026 lineup is one of the strongest in recent memory: Al Green, Public Enemy, Patti LaBelle, Major Lazer, Japanese Breakfast, Bomba Estéreo, and a strong contingent of Bay Area artists.

What makes it different

It's 100% free. The catch is the lottery system — tickets open six weeks before each show via the festival's online lottery, and a limited number of day-before tickets are released at Community Box Offices around SF. Volunteering at a show is another way in. The amphitheater itself is one of the best outdoor venues in the country: a natural bowl surrounded by old-growth eucalyptus and redwood, perfect afternoon acoustics, and a picnic-on-the-grass vibe.

Who it's for

Anyone in the Bay Area looking for a Sunday afternoon ritual all summer. Bring a blanket, a picnic, and a layer for the SF microclimate. This isn't a "festival" in the camping-and-wristbands sense — it's a series of free Sunday concerts that happen to feature world-class artists. Full lineup and lottery info at sterngrove.org.

5. Same Same But Different (SSBD) — Lake Perris, September 25–28, 2026

SSBD is the transformational-festival pick on this list. Held at Lake Perris State Park in Perris, California, from September 25 through 28, 2026, the four-day festival keeps its capacity intentionally small — only 7,500 tickets — and uses that intimacy to build a community-feeling weekend. The 2026 lineup is heavy on the bass-music side: phase one features LSDREAM, Of The Trees, and Tape B as headliners, with special guest Gramatik. Additional acts include Andy Frasco & The U.N., Kasablanca, Chef Boyarbeatz, Ship Wrek, Effin, Trés Mortimer, Wonkywilla, and more.

What makes it different

Five stages, 50+ workshops, art installations, and a lakeside setting that turns it into part festival, part retreat. SSBD leans into the "more than just music" formula: yoga, dance, art classes, and wellness programming run alongside the lineup. It's intentionally not a mega-festival — and the cap on tickets means it sells out.

Who it's for

Bass-music fans, transformational-festival regulars, and anyone who wants a smaller, more community-driven weekend than the typical California megafest. It's also a great closer to the summer festival season — the September dates mean cooler weather than the May–July circuit. Tickets and full lineup at ssbdfest.com.

How to plan your 2026 California festival year

If you tried to hit all five, you'd cover March (Mustache Bash), early May (Shabang), late May (Cali Roots), every Sunday through summer (Stern Grove), and late September (SSBD). That's six months of festival energy across the state — beach in San Diego, golf-course-turned-festival-grounds in SLO, reggae fairgrounds in Monterey, eucalyptus amphitheater in SF, and a state-park lakeside in Perris.

Quick planning notes

Three logistical things to know across these festivals. First, Stern Grove's lottery opens six weeks before each show — set a calendar reminder for the artists you most want to see. Second, Shabang's lack of on-site camping in 2026 means SLO-area lodging will book up fast. Third, SSBD's 7,500-ticket cap means it usually sells out — buy in the first phase if it's on your list.

Travel and lodging

Mustache Bash is easy — it's a single-day, single-location event in San Diego. Shabang and Cali Roots both pair well with a coastal-California weekend trip; SLO and the Monterey Peninsula are worth the drive on their own. Stern Grove is the easiest if you're already in the Bay Area. SSBD is the most "full immersion" experience — camp at Lake Perris and commit to the four days.

Bottom line

The best music festivals in California in 2026 cover every corner of the state and just about every genre you'd want. Mustache Bash for disco and funk in March. Shabang for indie and electronic in early May. Cali Roots for reggae and dub in late May. Stern Grove for free Sunday concerts all summer. SSBD for bass and transformational vibes in September. Pick one or pick all five — California's festival calendar makes the case for itself.

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