I host European guests in Japanese saunas most months of the year, and one question comes up on schedule. A guest expects the dim hush of a Finnish löyly room and finds a flat-screen television in a 90°C room, tuned to a variety show or a sumo bout, volume on. The reaction is rarely offense. It's disbelief — as though Japan imported a Finnish institution and got the room wrong.
That reading doesn't survive a look at where the television came from, or at how many rooms still have one.
Where the TV came from
Public sauna bathing in Japan traces to facilities that opened in Tokyo in the late 1950s and early 1960s. The story is usually compressed into "Finnish athletes brought saunas to Japan at the 1964 Olympics." The documented starting point is earlier: a Japanese Olympic marksman encountered saunas at the 1956 Melbourne Games and, shortly after returning, installed a dry sauna at Tokyo Onsen, an entertainment bath complex operating in Ginza since 1951. The 1964 Olympics still mark the format's first commercial spread; Tokyo Onsen is where it entered the country.
The television belongs to a later chapter. Through the 1980s and 90s, Japan built health lands and super sento — large-format bathhouses run like day resorts — where televisions were a fixture throughout the building, changing areas and dining halls included. The sauna room, on this reading, inherited a habit the rest of the building already had.
One limit, stated plainly: I could not find a record documenting who installed the first television in a Japanese sauna room, or why. What exists is a consistent secondhand explanation, repeated for years on enthusiast blogs — a screen gives bathers something to hold onto through a long, hot sit, and sumo and baseball broadcasts turned the room into a small social occasion for regulars. That is industry folklore, and I treat it as folklore here.
What the numbers show
On 17 July 2026, our editorial team searched Sauna Ikitai, Japan's largest sauna-review platform, filtering for listings with and without a television in the sauna room. The result: 3,130 listings with a TV, 11,513 without. Screen-free rooms outnumber TV rooms nearly four to one on the platform.
Caveats, briefly. The database is user-submitted, a facility with both kinds of room appears in both totals, and the platform's users may skew toward the newer end of the market. Read the ratio as a strong signal, not an audit.
The snapshot also shows today's distribution, not a trend line; there is no historical platform data to compare it against. My reading is that TV rooms concentrate in the older slice of the market. The health lands that built the habit largely still run, televisions included, while the post-2019 generation looks different: Shibuya SAUNAS and The Sauna in Nojiriko both describe rooms built around low light and quiet. Testing that reading properly — opening year against facility type — is what our paid report exists for.
How to read a TV sauna
Don't treat a television sauna as a failed Finnish one. It works as an extension of the Showa-era communal living room: a shared screen in a shared hot room, built for regulars who came back often enough that the broadcast became part of the visit. In Japan today, sauna rooms are more often designed around quiet. But the two rooms are answering different design questions.
The practical move for a visitor: Sauna Ikitai lets you filter for sauna rooms without a television — use it before you book. If you'd rather sit inside the older tradition, look for the health lands and super sento that carried it through the decades, sumo broadcast included.
The fuller breakdown, by opening year and facility type, is in our paid market analysis, published in Japanese on note — and either kind of room can anchor a trip our Bespoke desk builds.
— Takayama Sauna, Editor-in-Chief
Lead photograph: Kodakara-yu, an early-Shōwa-era bathhouse preserved as a museum exhibit at the Edo-Tokyo Open Air Architectural Museum in Koganei — a museum display, not an operating commercial sento. Photo: WikiTaro (ウィキ太郎), CC0, via Wikimedia Commons.
