Ogon-no-Yu in Tsubame Onsen: Free Outdoor Bath and Seasonal Access

Ogon-no-Yu is best approached as a small outdoor stop in the mountains, not a full-service spa. The appeal is the milky sulfur spring and the open setting near Myoko’s foothills. There is no admission charge, though the tourism office asks visitors to consider a voluntary contribution toward cleaning and upkeep.

Opening hours and the annual season

The usual visiting window is sunrise to sunset. The bath is unavailable on Monday and Friday mornings while it is cleaned. It also closes for winter snow, and the exact opening and closing dates can shift with conditions. In 2026, the tourism office announced the season opening on March 27; that notice described deep snow on the approach and required boots at the time. Always check current trail and facility notices for your own date.

Ogon-no-Yu is free to use. A contribution box supports maintenance, but it is not a ticket fee. The current tourism listing describes the bath as a milky outdoor hot spring; the Niigata tourism association identifies it as free-flowing. Avoid carrying old source-temperature figures over as current bath-water temperatures.

The walk and what to bring

From the Tsubame Onsen parking area, the walk takes about 10 minutes. This is a mountain path, not a paved approach to an urban bathhouse. Wet leaves, rain, residual snow and ice can change the footing, so wear shoes with grip and allow extra time on the way back.

Bring your own towel and keep expectations simple: this is a small outdoor bath, not a day spa. Ask the local tourism office about changing facilities or other amenities if those details matter to you. The public pages do not clearly state a tattoo policy, so check with the tourism office or management before travelling if that affects your plans. Respect the cleaning closure and leave no rubbish behind.

Getting there without a car

Myoko City’s Seki-Tsubame bus runs from Sekiyama Station to Tsubame Onsen. Departures are limited; check the current timetable for the return journey first, then allow time for the walk between the stop, bath and village. Our Tsubame half-day guide lays out how to fit the bus and nearby Sotaki viewpoint into a car-free visit.

Sources

- [Myoko Tourism: Ogon-no-Yu visitor information](https://myokotourism.jp/tourist-spots/%E9%BB%84%E9%87%91%E3%81%AE%E6%B9%AF/) - [Myoko Tourism: 2026 opening announcement](https://myokotourism.jp/news/%E7%87%95%E6%B8%A9%E6%B3%89%E3%80%8C%E9%BB%84%E9%87%91%E3%81%AE%E6%B9%AF%E3%80%8D%E3%82%AA%E3%83%BC%E3%83%97%E3%83%B3%E3%81%AE%E3%81%8A%E7%9F%A5%E3%82%89%E3%81%9B-2/) - [Niigata Tourism Association: Tsubame Onsen baths](https://niigata-kankou.or.jp/spot/11635) - [Myoko City: municipal buses and current timetables](https://www.city.myoko.niigata.jp/docs/892.html) - Photo credits: [Myoko Tourism](https://myokotourism.jp/)

Checked: September 27, 2026

Tags: Myoko, Tsubame Onsen, Ogon-no-Yu, outdoor onsen, free hot spring, seasonal access