From Sunday, May 10 to Sunday, May 24, 2026, the Grand Sumo May Tournament (Natsu Basho) will be held over 15 days at Ryogoku Kokugikan. Unlike one-off major events such as concerts or fireworks festivals, a Grand Sumo tournament is a rare event where every single day across 15 consecutive days is a demand day. This article aggregates daily OTA published price data from 35 hotels within walking distance (1.5 km radius) of Ryogoku Kokugikan, and quantitatively analyzes the impact of the tournament on accommodation demand, ADR, and sellout rates in the Ryogoku area — comparing against the same period last year and non-tournament periods. The conclusion: while demand is clearly elevated year-over-year, ADR response remains limited, and significant revenue opportunities persist, particularly on Sundays.

The Unique Nature of Grand Sumo as a 15-Day Consecutive Event

Of the six annual Grand Sumo tournaments, three are held in Tokyo at Ryogoku Kokugikan: January (Hatsu Basho), May (Natsu Basho), and September (Aki Basho). The remaining three are the March tournament in Osaka, July in Nagoya, and November in Fukuoka. This means Ryogoku Kokugikan hosts three tournaments per year, totaling 45 days of competition, making it an extremely important demand driver for accommodation in the Ryogoku area.

The May tournament opens on Sunday, May 10, 2026, with the middle day (Nakabi) on Sunday, May 17, and the final day (Senshuraku) on Sunday, May 24 — creating three Sunday peaks across 15 consecutive days. This “15 consecutive days” characteristic fundamentally differs from the demand patterns of typical one-off events such as a single concert, one-day fireworks festival, or a single sporting match. New spectators visit Ryogoku every day, settling into their masu-seki (box seats) in the morning and staying until the final bouts end in the evening — a pattern repeated for 15 days, meaning accommodation demand manifests not as “concentrated peak-day spikes” but as “sustained elevation across the entire period.”

Additionally, a surge in foreign spectators has been reported in recent years. According to Japan Today (2025), all six 2024 Grand Sumo tournaments achieved 90 consecutive days of sellouts — the first such occurrence in over 30 years. The Japan Sumo Association also recorded its highest-ever revenue in 2024, and will hold its first overseas exhibition in London in 30 years in October 2025. Matador Network (2026) reported that “the most surprising travel trend of 2026 is sumo wrestling,” indicating that the May tournament at Ryogoku is no longer merely a domestic event but increasingly serves as an attraction drawing international travel demand.

Daily ADR Trends at Hotels Within Walking Distance of Ryogoku Kokugikan (May 2026)

Let us now examine the actual accommodation price data. For the 22 properties analyzed within 1.5 km of Ryogoku Kokugikan, we aggregated daily ADR and sellout rates from May 1–31, 2026, observing how the 15 tournament days (May 10–24) differ from the normal weeks before and after.

Source: MetroEngines Research, compiled by HotelBank Editorial Team

Three structural patterns emerge from the chart. First, the ¥30,200 on May 3 (Sunday) represents the Golden Week final weekend peak — holiday demand unrelated to the sumo tournament (for city-level ADR trends during Golden Week, see our GW 2026: Hotel Pricing YoY Analysis Across 6 Major Cities). Second, weekday ADR (Tue–Thu) during the tournament period (May 10–24) ranged from ¥22,800 to ¥25,900, approximately 15–24% higher than the same weekdays after the tournament (¥19,800–¥20,900). Third, and most notably, the three Sundays (May 10, 17, 24) showed ADR of just ¥18,000–¥19,900 — barely different from post-tournament Sundays (June 7, 14: ¥17,200–¥17,500). Demand is clearly elevated, but prices have not adequately responded.

During vs. After Tournament: The Two Faces of Day-of-Week ADR and Sellout Rates

To more clearly demonstrate the presence of demand, we averaged ADR and sellout rates by day of week, comparing the tournament period (May 10–24) against the post-tournament period (May 25–June 14).

Source: MetroEngines Research, compiled by HotelBank Editorial Team

During the tournament, weekdays (Tue, Wed, Thu, Fri) show ADR ¥3,000–¥5,000 higher than the same weekdays post-tournament, with sellout rates also 8–10 points higher. This is clear evidence that sumo spectator accommodation demand is stacking on top of regular business travel demand. For baseline context on weekday business demand levels across major cities, see our Weekday ADR Deep Dive: Tokyo, Nagoya, Osaka & Fukuoka. Meanwhile, Sunday ADR during the tournament (¥19,100) is actually lower than post-tournament (¥20,000). However, the sellout rate during the tournament is 27.2% versus 18.4% post-tournament — a 9-point gap. In other words, Sunday demand is rising but prices are not moving, revealing a significant untapped revenue opportunity.

The table reveals that weekdays show upward pressure on both price and sellout rates, while Sundays see only sellout rates running ahead. Since spectators attend bouts daily, accommodation demand likely concentrates in a Sunday-night stay / Monday-departure pattern rather than a Saturday-night stay / Sunday-departure pattern for those watching Sunday bouts.

Year-over-Year Comparison (May 2025): Qualitative Shifts in Demand

Another critical perspective comes from comparing against last year’s May tournament (May 11–25, 2025, with a nearly identical schedule). We measured ADR and sellout rates for the same 22 properties during the prior-year period.

Source: MetroEngines Research, compiled by HotelBank Editorial Team

The most notable change is the sharp rise in sellout rates. During the three tournament Sundays last year (May 11, 18, 25), the sellout rate was 0.0% — meaning all available OTA plans were still accepting bookings at the time of survey. In contrast, the 2026 equivalent shows an average of 27.2% sold out across the three Sundays. This indicates dramatically stronger demand compared to the previous year, consistent with external data including the Japan Sumo Association’s announcements of “90-day sellouts in 2024” and “record-high revenue in 2024.”

ADR levels themselves are flat to slightly declining year-over-year, with Ryogoku View Hotel dropping from ¥25,800 to ¥23,300 (YoY -10%) and Dai-ichi Hotel Ryogoku (第一ホテル両国) from ¥20,200 to ¥18,700 (YoY -7%), while Henn na Hotel Tokyo Asakusabashi (変なホテル東京 浅草橋) and Pearl Hotel Ryogoku (パールホテル両国) maintained prior-year levels. In short, demand is surging while prices remain essentially flat — a pattern spread across the entire Ryogoku area. This suggests significant revenue opportunities remain untapped.

Hotel-Level Sellout Rates: Dai-ichi Hotel Ryogoku at 40–58% Occupancy

Examining individual hotels reveals even clearer demand concentration. Dai-ichi Hotel Ryogoku (第一ホテル両国), the largest city hotel within walking distance of Ryogoku Kokugikan with 334 rooms, recorded daily sellout rates of 40–58% during the tournament — far exceeding the area average of 27%.

Source: MetroEngines Inc., compiled by HotelBank Editorial Team

Dai-ichi Hotel Ryogoku’s sellout rates were 54.1% on opening day (May 10), 57.7% on the middle day (May 17), and 55.7% on the final day (May 24) — consistently high across all three Sundays. Meanwhile, ADR remained in a narrow range of ¥18,000–¥19,200. Given the hotel’s location (2-minute walk from Ryogoku Station, 3-minute walk from Kokugikan) and room count (334 rooms), its strong drawing power is well-demonstrated. Combining this with step-up pricing — for example, raising rates by 5% when 25% of Sunday inventory is sold, and another 5% at 50% — would create opportunities for further revenue expansion by lifting the average transacted price.

The Inbound Sumo Spectator Boom and Ryogoku’s Positioning

Tickets for the May 2026 tournament are being sold as spectator tour packages by multiple travel agencies (KNT, Yomiuri Travel, Tabitsukkusu, VIP Tours, etc.), and the Japan Sumo Association’s official fan club priority lottery consistently draws high competition ratios. According to Pia (Ticket Ozumo) sales information, premium seats near the ring — masu-seki (box seats) and tamari-seki (ringside seats) — routinely sell out early.

Engagement with international visitors is also growing. The Japan Sumo Association launched an English YouTube channel “Sumo Prime Time” in 2022, which had approximately 100,000 subscribers as of 2026. English-language travel media including Magical Trip, Japan Wonder Travel, and Stripes Japan feature standard content packages combining Ryogoku Kokugikan spectating with “morning practice viewing tours.” The Sumida City Tourism Association’s medium-term business strategy (2023–2025) also positions expanding foreign tourist accommodation and spending in the Ryogoku-Honjo area as a priority initiative.

In light of these structural shifts, hotels in the Ryogoku area are already transitioning from the traditional image of “sumo spectating = primarily domestic senior audience” to “diverse demand sources mixing domestic and inbound international visitors.” For background data on the tectonic shift where the foreign guest ratio in Tokyo has consistently exceeded 50%, see our Japan Tourism Agency January 2026 Report: Tokyo’s Foreign Guest Ratio Surpasses 50%. Combined with the unique 15-consecutive-day event characteristic, the Ryogoku area now sees multiple overlapping demand layers — weekday business travel, weekend leisure, Golden Week holiday demand, and tournament spectator demand — forming an exceptionally dense demand concentration.

Advice for Readers: Booking Timing and Looking Ahead to the Next Tournament

From a consumer perspective, for accommodation bookings in the Ryogoku area during the May tournament, Sundays during the tournament offer the best value. They are over ¥10,000 cheaper than Saturday nights, at nearly the same ADR level as regular post-tournament Sundays, while still securing a location within walking distance of Kokugikan. On the other hand, weekdays (Tue, Wed, Thu) command higher prices due to competition with business travel demand, so spectators seeking to minimize accommodation costs would make a rational choice by selecting Sunday nights.

From the hotel operator’s perspective, preparation for the next tournament immediately following the May tournament is crucial. The next tournament is the Nagoya Basho from July 12–26, 2026 (to be held at IG Arena for the first time), followed by the Aki Basho from September 13–27, 2026 (returning to Ryogoku). Since the September tournament will again be held at Ryogoku Kokugikan, there is time to prepare multiple levers before the September tournament based on the May tournament sellout data: early price adjustments aligned with weekday demand, stepped price increases in response to Sunday sellout rates, and expanded inbound-oriented pricing plans. We recommend aggregating the May tournament’s daily sellout results by day of week and building a stepped price-increase schedule starting three months before the September tournament (June).

For readers planning a Ryogoku sumo spectating trip, we recommend early accommodation booking timed to the May 2027 tournament ticket sales (typically late February). Data shows that within days of ticket sales opening, Saturday-night inventory (over ¥30,000) and weekday inventory (around ¥25,000) in the Ryogoku area thin out first.

Conclusion

The Grand Sumo May Tournament 2026 is a rare event where every single day across 15 consecutive days (May 10–24) is a demand day. Our daily analysis of OTA published price data from 22 hotels within walking distance of Ryogoku Kokugikan revealed three key findings:

Grand Sumo is now transforming into a major content pillar for inbound tourism to Japan. For hotel operators in the Ryogoku area, the May tournament is not merely an annual event but an ideal opportunity to visualize the demand curve and refine pricing strategies ahead of the September Aki Basho. We hope the data in this article serves as a useful input for data-driven revenue management decisions.

External Reference Links

• Japan Sumo Association Official Site — Annual Tournament Schedule
• Japan Sumo Association Official — May 2026 Tournament (Tokyo) Spectator Guide
• Japan Today — Foreign sumo fans flock to tournaments
• Matador Network — 2026’s Most Surprising Travel Trend? Sumo Wrestling.
• Sumida City Tourism Association — Medium-Term Business Strategy 2023-2025

• Latest Market Trends Articles
• Dynamic Pricing Articles
• Hotel Statistics Articles