What this is
Summer Sonic is one of Japan's premier annual music festivals, held simultaneously in Tokyo (Chiba's Makuhari Messe and surrounding venues) and Osaka every August. BABYMONSTER, the six-member K-pop girl group signed to YG Entertainment, are confirmed performers at the 2026 Tokyo edition on August 14th. Debuting in 2024, BABYMONSTER quickly became one of the most talked-about fourth-generation K-pop acts globally, known for their powerful performances blending rap, vocals, and sharp choreography. Their appearance at Summer Sonic marks a significant moment for K-pop crossover appeal at Japan's biggest international rock and pop festival.
Who should go
This is ideal for K-pop fans, particularly BABYMONSTER stans (MONSTER), as well as Summer Sonic regulars who enjoy discovering high-energy pop and idol performances alongside rock and electronic acts. The festival atmosphere is young, international, and energetic, attracting a diverse mix of Japanese music lovers and foreign visitors. Festival-goers who enjoy multi-stage events and want to catch multiple acts across a full day will get the most value. Book accommodation in the Chiba or Tokyo Bay area well in advance, as hotels fill up extremely fast during Summer Sonic weekend.
Good to know
Tickets for Summer Sonic are sold via the official Summer Sonic website, eplus.jp, and pia.jp β both eplus and pia accept foreign credit cards, and Lawson Ticket combini pickup is the most hassle-free option for visitors. Makuhari Messe is a large convention and arena complex that hosts the indoor stages, while ZOZOγγͺγ³γΉγΏγΈγ’γ serves as the massive outdoor main stage β the full site can accommodate tens of thousands across multiple stages simultaneously. Bag check is available on-site but queues can be long; travel light and use a small backpack or belt bag. The festival runs all day from late morning into the evening, so wear comfortable shoes, bring sunscreen and a portable fan for the outdoor areas in August heat, and stay hydrated. Merchandise lines for popular acts like BABYMONSTER form very early β queue before doors open if official goods are a priority.
This event was sourced and translated from Japanese by What's On Japan. Details may change β verify with the official source before attending.