The "First Blast" Returns to Tokyo’s Night Sky — Adachi Fireworks Reborn in Early Summer

As evening fell on May 30, the banks of the Arakawa River in eastern Tokyo came alive. The streets leading from nearby Kita-Senju Station to the riverbanks were already overflowing with people wrapped in a sense of eager anticipation. It was a Tokyo night just a little too early to be called true summer, yet beneath the collective gaze of the crowd, the Adachi Fireworks finally began.

Tracing its roots back to 1924, the event along the Arakawa River marked its 48th edition in its current format this year. Its greatest appeal lies in the sheer intensity of its “high-density fireworks” display — approximately 13,000 shells launched non-stop within a single hour.

Watching from the Backstreets — Fireworks Blooming Between the Alleys of Shitamachi

Strict crowd-control measures surrounded the main riverbank venue for safety reasons. The area was filled with intense excitement, accessible only to those with paid tickets or those who had secured spots hours in advance. 

Yet step away from the main site and wander along the riverside roads or through the quiet residential neighborhoods, and another scene emerges: people casually gazing up at the night sky from wherever they happen to be. Some watched from what could only be called the “best seats” of all — the balconies and small gardens of their own homes. I also moved through the area as I walked, enjoying the fireworks from changing vantage points.


Brilliant bursts of light suddenly appearing through gaps between old wooden houses and narrow Shitamachi streets — that, too, feels like a uniquely Tokyo way to experience fireworks.

Why Japanese Fireworks Belong to Summer

Japan’s fireworks culture did not develop merely as entertainment.

During the Edo period, advances in gunpowder and pyrotechnic technology allowed fireworks to flourish as a major part of commoner culture. The clearest example is the origin of today’s Sumidagawa Fireworks Festival. It began in 1733 (the 18th year of the Kyōhō era) as the Suijin-sai, or Water Deity Festival, held to mourn victims of famine and plague while praying for protection from disease.

In other words, at the root of Japanese fireworks lies a sense of requiem and spiritual purification. Much like the Okuribi fires of Obon, fireworks carry the feeling of remembering and sending off the souls of the deceased through fire.

In many Western countries, fireworks are associated with celebration — Independence Day, New Year’s Eve, or national holidays. In Japan, however, fireworks are deeply tied to summer itself. Watching the night sky in a yukata while cooling off in the evening breeze carries a sense of fleeting beauty and quiet nostalgia. That atmosphere is an essential part of Japan’s unique fireworks culture.

The Battle Against Extreme Heat — And the Challenge of a May Schedule

The Adachi Fireworks were traditionally held in late July, usually about one week before the historically older Sumidagawa Fireworks Festival. For many Tokyo residents, it served as the opening signal of the city’s summer fireworks season.

The decision to move the event to late May was implemented in 2025, driven largely by Tokyo’s increasingly dangerous summer heat. Because enormous crowds fill not only the riverbanks but also the surrounding narrow streets, concerns over heatstroke had become impossible to ignore. It was a difficult but necessary decision.

However, the transition was far from smooth.

The inaugural May event in 2025 was canceled due to unstable weather conditions associated with the seasonal rain front and an approaching typhoon. The cancellation announcement came while large crowds had already gathered in the area, and videos capturing the collective disappointment quickly spread online.

The previous year’s 2024 event, still scheduled in July, had also been canceled because of sudden severe weather. Before that, the festival had already endured multiple cancellations during the COVID-19 pandemic from 2020 through 2022.

As a result, the Adachi Fireworks had gradually become something of a “phantom festival” in recent years.

Even on the morning of this year’s event, concerns lingered after reports of a typhoon forming over the southern seas. Yet by evening, the sky above Tokyo was perfectly clear.

The moment the first massive burst opened overhead, a thunderous roar erupted from the spectators lining the Arakawa River. Smartphone screens raised toward the sky shimmered like stars, while a cool early-summer breeze drifted through the crowd.

It was completely different from the humid, suffocating atmosphere of the old midsummer festivals. The shift felt like more than a simple calendar adjustment — it felt like the birth of a new Tokyo fireworks tradition.

The Night That Signals the Beginning of Tokyo’s Fireworks Season

Weather risks will likely remain an unavoidable challenge in the years ahead. Even so, the “Early Summer Adachi Fireworks” already feels as though it is becoming a new seasonal tradition for Tokyo.

The festival has always carried the identity of an opening salvo. Now, by arriving before the peak of midsummer, that role feels even sharper and more distinctive than before.

With this night as its curtain-raiser, Tokyo now moves into the height of fireworks season — from the historic Sumidagawa Fireworks Festival to the waterfront displays of Tokyo Bay and the Jingu Gaien Fireworks Festival, where pyrotechnics merge with live music.

Tokyo’s summer has only just begun.