# Tokyo Summer Splash water festival

> Live situation record from CLSTR: https://clstr.news/situations/tokyo-summer-splash-water-festival
> Updated: 2026-08-03T00:20:50.000Z. Sources: 4. Developments: 2.

In late July, officials announced that Tokyo’s livedoor Urban Sports Park would host the “Summer Splash” water‑themed festival each weekend from 1 to 23 August 2026, featuring water‑gun battles, a carnival, mist showers and a cooling pool, with tickets starting at ¥900 and heat‑alert safety protocols.

A week later, the Tokyo Metropolitan Government opened applications for the new “Tokyo Sports Promotion Company” designation (Sept 1 – Oct 30 2026), offering certified firms a badge, public listing and employee‑wellness benefits. The same private organiser detailed the “Arigake Summer Splash” event at the Ariake site, confirming the weekend schedule, entry fees and heat‑safety measures, linking the festival to the broader city‑wide sports‑promotion initiative.

## Timeline

### 2026-08-03: Tokyo opens applications for Sports Promotion Companies and launches the Arigake Summer Splash water festival

Tokyo opens 2026 applications for its Sports Promotion Company programme and hosts the Arigake Summer Splash water festival in Ariake, offering water‑gun battles and 1‑coin games each weekend in August.

2 sources. https://clstr.news/cluster/tokyo-opens-applications-for-sports-promotion-companies-and-launches-the-arigake-summer-splash-water

### 2026-07-26: Tottori’s Yonago to host barefoot mini sports day; Tokyo to hold Summer Splash water games

Yonago City will hold a barefoot mini sports day on 10 Oct 2026, while Tokyo’s livedoor Urban Sports Park runs the Summer Splash water‑gun festival from 1‑23 Aug 2026.

2 sources. https://clstr.news/cluster/tottoris-yonago-to-host-barefoot-mini-sports-day-tokyo-to-hold-summer-splash-water-games

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Cite as: Tokyo Summer Splash water festival. CLSTR, https://clstr.news/situations/tokyo-summer-splash-water-festival