Right Onsen › Tokyo › Niijima
Mamashita Hot Spring
4.3★ · 129 Google ratings · Niijima, Tokyo · まました温泉
✓ Day visitors✓ Outdoor bath✓ Kakenagashi✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesConfirmed by recent visitor reports
Hours
13:00–21:00From the facility's listing
Closed
WednesdayWeekly closing days from the listing
Tattoos
? Call aheadNo policy stated in the 30 recent reviews we read or on the facility's website
Price
¥300 adultConfirmed by recent visitor reports
Time limit
10-15 minutes for the sand-steam bathConfirmed by recent visitor reports
Bathing
Men and women separateReported by two visitors
How we know this
- Day visitors: Day-use bathing is offered for 300 yen admission across 2023-2026 reviews. · 4 visitors, Mar 2023 – Apr 2026
- Price: Admission has been consistently 300 yen from 2023 through 2026, with a separate sand-steam bath fee of 700 yen. · 4 visitors, Mar 2023 – Apr 2026
- Time limit: The sand-steam bath session is limited to about 10-15 minutes per visitor. · 3 visitors, Nov 2024 – Sep 2025
- Bathing arrangement: Baths are separated by gender, as noted in reviews describing the men's and women's sides. · 2 visitors, Mar 2024 – Feb 2026
The bath
What you’ll find
A budget seaside public bath and rare sand-steam bath on Niijima island, with indoor and outdoor tubs overlooking the ocean, sauna, and cold plunge; cash only, 300 yen entry.
Bath setup
Indoor baths
1Reported by one visitor
Outdoor bath
✓ YesConfirmed by recent visitor reports
Sauna
✓ YesConfirmed by recent visitor reports
Cold bath
✓ YesConfirmed by recent visitor reports
View
OceanConfirmed by recent visitor reports
Rest area
✓ YesReported by two visitors
Spring water
Free-flowing (kakenagashi)
✓ FullFresh spring water flows continuously through the bath
How we know this
- Indoor baths: One indoor bath is described alongside the outdoor bath in a detailed 2026 review. · 1 visitor, Feb 2026
- Outdoor bath: There is an outdoor bath with ocean views, noted repeatedly from 2025 into 2026. · 3 visitors, May 2025 – Apr 2026
- Sauna: A sauna is present, mentioned from 2024 through 2026. · 3 visitors, Aug 2024 – Apr 2026
- Cold bath: Most reviewers report a cold plunge bath, though one 2024 review said the women's sauna area lacked one. · 3 visitors, Mar 2024 – Aug 2026
- View: The outdoor bath offers an ocean view, sometimes with visible stars at night. · 3 visitors, Aug 2024 – Oct 2025
- Rest area: A rest area with seating near the entrance is available for visitors. · 2 visitors, Jan 2024 – Feb 2026
- Free-flowing (kakenagashi): Reviewers describe the water as source hot-spring flow-through (kakenagashi) in 2024. · 2 visitors, May 2024 – Nov 2024
Guide
Good to know
Soap & shampoo
Basic shampoo and body soap are usually supplied, though one 2023 review found only body soap with no shampoo.
Confirmed by recent visitor reportsTowels
Towels are not included but can be rented or purchased for 100 yen.
Reported by two visitorsPractical
What you need
Towels
For saleReported by two visitors
Soap & shampoo
✓ ProvidedConfirmed by recent visitor reports
Lockers
✓ FreeReported by two visitors
Wheelchair
✓ ParkingAccessible parking per the listing; the baths themselves are not assessed
How we know this
- Towels: Towels are not included but can be rented or purchased for 100 yen. · 2 visitors, Mar 2023 – Apr 2026
- Soap & shampoo: Basic shampoo and body soap are usually supplied, though one 2023 review found only body soap with no shampoo. · 3 visitors, Mar 2023 – Dec 2025
- Lockers: Lockable lockers are provided at no extra coin cost, though visitors are asked not to take the keys home. · 2 visitors, Jun 2023 – Feb 2026
Timing
When to go
Quietest Tuesday around 13:00. Busiest Sunday around 17:00.
| 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 | 13:00–21:00 |
| Tuesday | 13:00–21:00 |
| Wednesday | Closed |
| Thursday | 13:00–21:00 |
| Friday | 13:00–21:00 |
| Saturday | 13:00–21:00 |
| Sunday | 13:00–21:00 |
Closed Wednesday.
Getting there
How to get there
Nearest station
Minami-machida Grandberry Park129.4 km in a straight line; bus or taxi from the station
Address
2 Setoyama, Niijima, Tokyo 100-0400From the facility's listing
Show a driver
まました温泉The name in Japanese, for a taxi or at the counter
Phone
+814992-5-0830Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
www.niijima.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 Mamashita Hot Spring without staying overnight?
Day-use bathing is offered for 300 yen admission across 2023-2026 reviews.
How much does Mamashita Hot Spring cost?
Admission has been consistently 300 yen from 2023 through 2026, with a separate sand-steam bath fee of 700 yen.
Is the water free-flowing spring water?
Reviewers describe the water as source hot-spring flow-through (kakenagashi) in 2024.
