Kusatsu, Gunma / 西の河原露天風呂
Sainokawara Open-air Bath
One of Japan's largest open-air baths, about 500 square metres for men and women together, set in the woods of Kusatsu with fresh greenery, autumn leaves or snow all around.
Last official check
25 Sept 2026
Traveler reports
0
Reports open in Phase 2
Next scheduled check
24 Dec 2026
Before you go
Only facts we confirmed on official sources are shown. Anything else is marked “Not checked yet”.
- Opening hours
April 1 - November 30: 7:00-20:00; December 1 - March 31: 9:00-20:00 (last entry 19:30).
Checked 25 Sept 2026 on the official site- Closed
Not checked yet — we have not confirmed this on an official source yet. Check with the spot before you go.
- Admission
Adults 600 yen, children 300 yen.
Checked 25 Sept 2026 on the official site- Getting there
About 25 minutes by bus from Naganohara-Kusatsuguchi Station to the Kusatsu Onsen bus terminal, then about 15 minutes on foot.
Checked 25 Sept 2026 on the official site- Parking
Tenguyama car park 1 (free, about 300 spaces).
Checked 25 Sept 2026 on the official site- Payment
Not checked yet — we have not confirmed this on an official source yet. Check with the spot before you go.
- Accessibility
Not checked yet — we have not confirmed this on an official source yet. Check with the spot before you go.
Found wrong or outdated information? Let us know
Address: Kusatsu, Gunma (Japanese address: 群馬県吾妻郡草津町大字草津521-3)
Official site: http://sainokawara.com/
Location
Smaller pins are other spots nearby.
Nearby spots
- No photo yetNetsunoyu Yumomi ShowGunmaLess than 1 km away (straight line)
Photo: Aspere / Wikimedia Commons, CC0 (cropped and resized)Yubatake, Kusatsu OnsenGunmaLess than 1 km away (straight line)- No photo yetChatsubomigoke Moss ParkGunma3 km away (straight line)
- No photo yetManza OnsenGunma7 km away (straight line)
Photo: Kentaro Ohno / Wikimedia Commons, CC BY 2.0 (resized)Shima OnsenGunma18 km away (straight line)
Distances are straight-line distances, not travel distances.
Crowds
- Crowd level
Not checked yet — no official source yet, and not enough traveler reports.
- Best time to visit
Not checked yet — no official source yet, and not enough traveler reports.
- Peak time
Not checked yet — no official source yet, and not enough traveler reports.
- Busiest days
Not checked yet — no official source yet, and not enough traveler reports.
- Busiest season
Not checked yet — no official source yet, and not enough traveler reports.
- Latest traveler report
- None yet
Traveler crowd data by time of day appears after 5 traveler reports (0 so far).
You can check typical busy hours in Google Maps ("Popular times" on the place's page). Open this spot in Google Maps
Visiting respectfully
- Local etiquetteEvery Friday from 17:30 to 20:00 (except certain days) is "mixed bathing day", when the men's bath becomes mixed.Checked 25 Sept 2026 on the official site
Verification log
- 25 Sept 2026First check · Official website · http://sainokawara.com/Hours read from the official site.
- 25 Sept 2026First check · Tourism board · https://gunma-kanko.jp/spots/28Fees, access, parking and coordinates read from a tourism organization's site.