In Japan, 8 of the curated saunas fit this cut. See the full Japan country guide for every venue, or keep scrolling for just the infrared saunas.
Every infrared sauna in Japan
Asukayama Onsen
¥Tokyo, Japan
Asukayama Onsen is a day-use bathhouse in Kita-ku, using pumped and heated groundwater rather than a true hot spring. It runs a full infrared sauna alongside large tubs, jet baths and an open-air bath.
Ginza Ganbanyoku Dan
¥¥Tokyo, Japan
A women-only bedrock bath (岩盤浴) in Ginza. Bedrock bathing here is a dry, heated-stone treatment rather than a Finnish-style sauna.
Kirakuyu
¥Nobeoka, Japan
Kirakuyu is a small, old-fashioned sento in Nobeoka with a compact infrared sauna alongside the bath. It has no venue-run website, so details beyond the basics are limited.
Kugaharayu
¥Tokyo, Japan
Kugaharayu is a neighbourhood sento in Ota, Tokyo, drawing on both a natural hot spring and an artificial carbonated bath. Entry covers the steam sauna; the far-infrared sauna costs a small surcharge, and each has its own cold plunge. The bathhouse is billed as Ota Ward's first health-promotion sento.
Nu-Land Sagamiyu
¥Tokyo, Japan
Nu-Land Sagamiyu is a day-use hot spring complex in Tokyo's Ota ward, built around the area's distinctive black-tinted natural spring water. Eight bathing options include a far-infrared sauna, a cold plunge, an open-air bath and jet baths. The complex also has a restaurant floor and a lounge that hosts occasional live music.
Sauna-Tokyo
¥¥Tokyo, Japan
Sauna-Tokyo is a men-only sauna specialist in Akasaka with five named sauna rooms and three cold plunges. Rooms range from a kelo-wood self-löyly sauna to a steam box styled on Edo-era bathing, with aufguss shows and a restaurant on site. Regular ladies days open the whole venue to women only.
Sugoisauna — Gotanda Ekimae
¥¥Tokyo, Japan
Sugoisauna's Gotanda branch is a men-only private sauna suite a short walk from Gotanda station. It is booked by the room through the operator's own app. Marketing describes an intense, volcanic-rock heat source developed with the group's skincare partner Esthe Pro Labo.
The Class.
¥¥Tokyo, Japan
The Class. is a private-room sauna club in Ebisu, built around a proprietary lava-rock sauna held around 65 degrees Celsius with automatic löyly. A fifteen-degree cold plunge and dedicated rest beds follow in the same room. Visitors can book a room without joining, alongside a membership tier for regulars.