Chiba Festival Calendar [2026]: A Roundup of Music Festivals and Outdoor Events

Music Festival Master / Editor-in-ChiefHane Keisuke
Editor-in-chief of RAG MUSIC and in charge of music festivals. When I attended my first music festival as a freshman in college, I was captivated by its charm—“I can’t believe there’s a place this free and this fun.” I share information about wonderful music festivals every day to help grow the community of festival fans.

We’ve put together a list of music festivals in Chiba Prefecture, including summer festivals, rock festivals, and outdoor festivals.We look forward to welcoming you again this year at exciting events like PUNKSPRING, JAPAN JAM BEACH, and SUMMER SONIC!

Past events

SONICMANIAFriday, Aug 15 — Chiba Prefecture

Sonicmania is an all-night event held the night before the main Summer Sonic each year as a pre-festival. However, its momentum has grown into something far beyond a mere pre-party. With a lineup that fuses rock and dance, it offers new experiences to each community.

Schedule	Friday, August 15, 2025
place	Makuhari Messe, Chiba City, Chiba Prefecture
Website	https://www.summersonic.com/sonicmania/
SNS

View details

Report a problem

Iwai BEACH Fes.Tue, Aug 5 – Chiba Prefecture

http://www.cm-boso.com

Schedule	Tue, August 5, 2025
place	Iwashi (Iwai) Beach, Minamiboso City, Chiba Prefecture
Website	https://www.cm-boso.com/beachfes2025.html
SNS

Report a problem

NEW HORIZON FESTSat 8/2 – Sun 8/3, Chiba Prefecture

Schedule	Sat, Aug 2–Sun, Aug 3, 2025
place	Makuhari Messe International Exhibition Halls 9–11, Chiba City, Chiba Prefecture
Website	https://www.sammy.co.jp/japanese/fest/2025/newhorizon/
SNS

Report a problem