Gunma Music Festivals [2026]: Outdoor Festivals and Event Roundup

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 roundup of music festivals in Gunma Prefecture, including summer festivals, rock festivals, and outdoor festivals.

We look forward to welcoming you again this year at exciting events like I ROCKS, New Acoustic Camp, and YAMABITO Ongakusai (Yamabito Music Festival)!

Past events

HIGH School CAMPSat 9/6 – Sun 9/7, Gunma Prefecture

http://www.gaion.tokyo

Dubbed a “summer-camp-style” music festival, this multifaceted event repurposes a former elementary school. It’s packed with summer fun—not just music, but also food and ghost stories—and even offers camping.

Schedule	Sat–Sun, Sep 6–7, 2025
place	Gunma Prefecture, Tone District, Saru Elementary School you can stay at
Website	https://www.gaion.tokyo
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GLOBAL ARKAug 29 (Fri) – 31 (Sun), Gunma Prefecture

Schedule	Fri, Aug 29–Sun, Aug 31, 2025
place	Gunma Prefecture, Agatsuma District, Asamakakushi Onsen-kyo Suteki-na Mura Campground, Nukawa Campground
Website	https://global-ark.net/
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