Monthly Report: June 2026
Jul 6, 2026
Monthly Sauna Facility Rankings Report
We present the June sauna facility rankings based on the "T-Flow Score," which utilizes measurement data from the sauna device.
Factors Behind Monthly Ranking Fluctuations
Monthly rankings of sauna facilities fluctuate due to various factors. As the number of sauna users and comfort levels change with seasonal and weather transitions, these effects are reflected in the rankings.
Additionally, improvements within the facilities themselves and event hosting are also factors that influence the rankings. Consequently, rankings are updated monthly, allowing all "Sanokuni" users to always access the latest information.
Nationwide T-Flow Score Rankings
| Rank | Facility Name | Pref ecture | T-Flow Score |
|---|---|---|---|
| 1 | Goshikiyu | Tokyo | 87.97 |
| 2 | Wago no Yu Super Sento / Sento | Shizuoka | 87.79 |
| 3 | Kashima Central Natural Hot Spring Bijin no Yu Yunohana | Ibaraki | 87.51 |
| 4 | 3S HOTEL ATSUGI | Kanagawa | 87.14 |
| 5 | Yume no Koshu Yokujo Goshiki | Osaka | 86.89 |
| 6 | Ogikubo Nagomi no Yu | Tokyo | 86.65 |
| 7 | Korona no Yu Toyokawa | Aichi | 86.62 |
| 8 | Natural Toda Onsen Saika no Yu | Saitama | 86.46 |
| 9 | Edomari Onsen Nagomi no Yu | Yamaguchi | 86.44 |
| 10 | Megumi no Yu | Gifu | 86.37 |
Attention Ranking
The rate of increase in the number of users compared to the previous month is defined as "Attention"!
| Rank | Facility Name | Prefecture | Interest |
|---|---|---|---|
| 1 | Renaissance Inage 24 | Chiba | 360% |
| 2 | Fukaya Hanazono Onsen Hanayu no Mori | Saitama | 280% |
| 3 | SPA & SAUNA Suishun Hattori Ryokuchi | Osaka | 255% |
| 4 | Yu Pausa Hibari | Tokyo | 233% |
| 5 | Masuto no Yu | Iwate | 225% |
| 6 | Egotayu | Tokyo | 217% |
| 7 | sauna152 | Mie | 200% |
| 8 | Kyonan Yokujo | Tokyo | 200% |
| 9 | RAKU SPA Cafe Hamamatsu | Shizuoka | 175% |
| 10 | Day-trip Hot Spring Fuji no Yu | Fukushima | 169% |
T-Flow Score Growth Rate Ranking
Calculating the average T-Flow Score growth rate for each Facility compared to the previous month!
| Rank | Facility Name | Prefecture | Growth Rate |
|---|---|---|---|
| 1 | Natural Hot Spring Urayu (Ryokan Urashima) | Hiroshima | +26.47% |
| 2 | Abashiri Royal Hotel | Hokkaido | +23.23% |
| 3 | Ritodepo | Saitama | +21.56% |
| 4 | REVA Social Wellness | Singapore | +20.24% |
| 5 | Joto Onsen Iwaki Tenbo no Yu | Aomori | +16.12% |
| 6 | Manten no Yu | Okayama | +15.07% |
| 7 | LC Goryokaku Hotel | Hokkaido | +14.96% |
| 8 | APA Hotel Kanazawa Chuo | Ishikawa | +14.65% |
| 9 | Real Sauna Kinshicho | Tokyo | +14.30% |
| 10 | Carna Park Hanatateyama Onsen | Fukuoka | +14.15% |
Significance of Monthly Rankings
Monthly rankings, created using the "T-Flow Score", serve as an extremely useful source of information for sauna enthusiasts.
The rankings feature objective and fair evaluations based on data from the sauna device. This allows this ranking to be used as a new index that also takes into account comfort, refreshment, and safety.
Calculation Method
Attention Level: Based on registered Totonoi Log data, it displays the growth rate of Facility users compared to the previous month. For example, 250% means the number of users is 2.5 times that of the previous month (i.e., a 150% increase).
Average T-Flow Score Growth Rate: It displays the rate of change in the average T-Flow Score at each Facility compared to the previous month. For example, +25.2% means the average T-Flow Score has increased by 25.2% compared to the previous month.
That concludes the monthly report for June.
Have a great sauna life this month as well!
