Right Onsen › Tokyo › Ota City
Kugaharayu
4.1★ · 379 Google ratings · Ota City, Tokyo · 久が原湯
✓ Day visitors✓ Outdoor bath✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesFrom the facility's listing
Hours
14:00–00:00From the facility's listing
Closed
MondayWeekly closing days from the listing
Tattoos
? Call aheadNo policy stated in the 38 recent reviews we read or on the facility's website
Price
¥600 adultStated on the facility's website
Bathing
Men's and women's sides swap by timeConfirmed by recent visitor reports
How we know this
- Day visitors: Listed as a sento (public bathhouse): a bath for day visitors by definition. No visitor review states otherwise. · from the listing category
- Price: stated on the facility's website, read 2026-09
- Bathing arrangement: Reviewers (2025-2026) report the two bathing rooms ('Sun' and 'Moon') are swapped between men and women on a regular schedule. · 3 visitors, Sep 2025 – Feb 2026
The bath
What you’ll find
Kugaharayu is a black-water (kuroyu) hot-spring public bath (sento) in Ota Ward with steam and dry saunas, several cold plunges, and two swapped bathing rooms for men and women; tattoos are allowed, but it is cash-only and some lockers lack locks.
Bath setup
Outdoor bath
✓ YesReported by two visitors
Sauna
✓ YesConfirmed by recent visitor reports
Cold bath
✓ YesConfirmed by recent visitor reports
Rest area
✕ NoReported by two visitors
Spring water
Spring type
black moor-type mineral springConfirmed by recent visitor reports
Source temperature
23°CReported by one visitor
Free-flowing (kakenagashi)
Partly confirmedFresh spring water flows continuously through the bath
How we know this
- Outdoor bath: Reviewers described a small semi-outdoor black-water bath area, though the urban surroundings limit any sense of openness (2025-2026). · 2 visitors, Aug 2025 – Apr 2026
- Sauna: Reviewers from 2025 to 2026 consistently describe a free steam sauna and a paid dry sauna. · 3 visitors, Nov 2025 – Jul 2026
- Cold bath: Multiple reviewers (2025-2026) describe cold plunge baths, including one filled with kakenagashi black-water spring water. · 3 visitors, Nov 2025 – Jul 2026
- Rest area: Reviewers (2025-2026) noted there is little to no dedicated rest area for lingering after bathing. · 2 visitors, Dec 2025 – Jul 2026
- Spring type: Reviewers from 2025 to 2026 describe the bath's dark, peat-derived kuroyu mineral spring water. · 4 visitors, Nov 2025 – Jul 2026
- Source temperature: A 2025 reviewer described the black-water cold spring source as roughly 22-25°C. · 1 visitor, Sep 2025
- Free-flowing (kakenagashi): Reviewers (2025) note that only the black-water cold plunge tubs are kakenagashi (source-fed), not the whole bathing system. · 3 visitors, Nov 2025 – Dec 2025
Guide
Good to know
Hair dryer
Hair dryers are available but coin-operated at 30 yen per 3 minutes; visitors may bring their own dryer to use a free outlet.
Confirmed by recent visitor reportsLockers
One reviewer (2026) said changing-room lockers require no coin, while another (2026) noted some top-row lockers cannot be locked.
Reported by two visitorsRest area
Reviewers (2025-2026) noted there is little to no dedicated rest area for lingering after bathing.
Reported by two visitorsSauna
Reviewers from 2025 to 2026 consistently describe a free steam sauna and a paid dry sauna.
Confirmed by recent visitor reportsPractical
What you need
Towels
Rental availableReported by two visitors
Soap & shampoo
✓ ProvidedConfirmed by recent visitor reports
Lockers
✓ FreeReported by two visitors
Hair dryer
✓ YesConfirmed by recent visitor reports
How we know this
- Towels: One reviewer (2025) said towel rental is available, while another (2026) advised bringing your own towel. · 2 visitors, Dec 2025 – Feb 2026
- Soap & shampoo: Reviewers from 2025 to 2026 consistently report free body soap and shampoo/conditioner at the washing stations. · 3 visitors, Dec 2025 – Feb 2026
- Lockers: One reviewer (2026) said changing-room lockers require no coin, while another (2026) noted some top-row lockers cannot be locked. · 2 visitors, Jan 2026 – Jun 2026
- Hair dryer: Hair dryers are available but coin-operated at 30 yen per 3 minutes; visitors may bring their own dryer to use a free outlet. · 3 visitors, Nov 2025 – Jul 2026
Timing
When to go
Quietest Tuesday around 14:00. Busiest Sunday around 21:00.
| 8A | 9A | 10A | 11A | 12P | 13P | 14P | 15P | 16P | 17P | 18P | 19P | 20P | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MO | |||||||||||||
| TU | |||||||||||||
| WE | |||||||||||||
| TH | |||||||||||||
| FR | |||||||||||||
| SA | |||||||||||||
| SU |
Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | Closed |
| Tuesday | 14:00–00:00 |
| Wednesday | 14:00–00:00 |
| Thursday | 14:00–00:00 |
| Friday | 14:00–00:00 |
| Saturday | 12:00–00:00 |
| Sunday | 12:00–00:00 |
Closed Monday.
Getting there
How to get there
Nearest station
Nishi-magomeAbout 12 min on foot, 1.0 km in a straight line
Address
Yamagishi Building, 2-14-15 Kugahara, Ota City, Tokyo〒146-0085 Tokyo, Ota City, Kugahara, 2 Chome−14−15 山岸ビル · From the facility's listing
Show a driver
久が原湯The name in Japanese, for a taxi or at the counter
Phone
+813-3754-4452Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
ota1010.comOfficial, in Japanese
The map loads only when you ask for it and connects your browser to Google.
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What matters
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Questions
Common questions
Can I visit Kugaharayu without staying overnight?
Listed as a sento (public bathhouse): a bath for day visitors by definition. No visitor review states otherwise.
Is the water free-flowing spring water?
Reviewers (2025) note that only the black-water cold plunge tubs are kakenagashi (source-fed), not the whole bathing system.
