Right Onsen › Tokyo › Machida
Tama Sakai Natural Hot Spring Mori no Irodori
4.0★ · 2,549 Google ratings · Machida, Tokyo · 多摩境天然温泉 森乃彩
✓ Day visitors✓ Outdoor bath✓ Kakenagashi✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesFrom the facility's listing
Hours
09:00–00:00From the facility's listing
Tattoos
? Call aheadNo policy stated in the 40 recent reviews we read or on the facility's website
Price
¥880 adultReported by two visitors
Bathing
Men and women separateReported by two visitors
How we know this
- Day visitors: Listed as a day-use onsen: a bath for day visitors by definition. No visitor review states otherwise. · from the listing category
- Price: Weekday admission is about 880 yen, while weekend/holiday admission runs roughly 980 to 1000 yen, with one visitor reporting 1020 yen during the Obon holiday period in 2026. · 2 visitors, Jul 2026 – Aug 2026
- Bathing arrangement: The facility has separate men's and women's baths, including women-only reclining areas. · 2 visitors, Aug 2026
The bath
What you’ll find
A day-use natural hot spring bathhouse (super sento style) in Tokyo's Tama area with black kuro-yu outdoor and indoor baths, two saunas, and a cold plunge; weekday admission is about 880 yen, rising to roughly 980-1000 yen on weekends and holidays.
Bath setup
Outdoor bath
✓ YesReported by two visitors
Sauna
✓ YesReported by two visitors
Cold bath
✓ YesReported by two visitors
View
ForestReported by two visitors
Rest area
✓ YesReported by two visitors
Restaurant
✓ YesReported by two visitors
Spring water
Spring type
black springReported by two visitors
Bath temperature
42°CReported by two visitors
Free-flowing (kakenagashi)
✓ FullFresh spring water flows continuously through the bath
How we know this
- Outdoor bath: Multiple visitors between 2026-06 and 2026-09 described an outdoor bath with hot, lukewarm and cool pools set among trees. · 2 visitors, Jul 2026 – Sep 2026
- Sauna: Reviewers from 2026-06 to 2026-09 consistently mention two sauna types (a dry sauna with auto-loyly and a salt/herb sauna). · 2 visitors, Aug 2026
- Cold bath: A cold plunge pool (about 15.5°C) is present alongside the saunas. · 2 visitors, Jul 2026 – Aug 2026
- View: The outdoor relaxation area faces bamboo groves and forest. · 2 visitors, Jul 2026 – Aug 2026
- Rest area: A free second-floor rest area with reclining chairs and manga is available, though it can fill up on busy days. · 2 visitors, Jul 2026 – Sep 2026
- Restaurant: An on-site restaurant serves meals such as ramen, udon/soba, and set lunches. · 2 visitors, Jun 2026 – Aug 2026
- Spring type: The spring water is repeatedly described as a dark, black-colored 'kuro-yu' hot spring. · 2 visitors, Jul 2026 – Aug 2026
- Bath temperature: Outdoor bath temperatures vary by pool, with hot pools reported between 41°C and 44°C and cooler pools around 36-40°C. · 2 visitors, Jul 2026
- Free-flowing (kakenagashi): The outdoor bath is explicitly described as source-fed (kakenagashi) hot spring water. · 3 visitors, Jun 2026 – Jul 2026
Guide
Good to know
Rest area
A free second-floor rest area with reclining chairs and manga is available, though it can fill up on busy days.
Reported by two visitorsBath temperature
Outdoor bath temperatures vary by pool, with hot pools reported between 41°C and 44°C and cooler pools around 36-40°C.
Reports differ; reported by two visitorsPractical
What you need
Parking
✓ Free on siteFrom the facility's listing
Wheelchair
✓ Entrance, restroom, parkingAccessible entrance, restroom, parking per the listing; the baths themselves are not assessed
Timing
When to go
Quietest Tuesday around 9:00. Busiest Sunday around 18:00.
| 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 | 09:00–00:00 |
| Tuesday | 09:00–00:00 |
| Wednesday | 09:00–00:00 |
| Thursday | 09:00–00:00 |
| Friday | 09:00–00:00 |
| Saturday | 07:00–00:00 |
| Sunday | 07:00–00:00 |
Getting there
How to get there
Nearest station
TamasakaiAbout 21 min on foot, 1.7 km in a straight line
Address
1 Chome-11-5 Oyamagaoka, Machida, Tokyo 194-0215From the facility's listing
Show a driver
多摩境天然温泉 森乃彩The name in Japanese, for a taxi or at the counter
Phone
+8142-860-1026Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
morinoirodori.comOfficial, in Japanese
The map loads only when you ask for it and connects your browser to Google.
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Questions
Common questions
Can I visit Tama Sakai Natural Hot Spring Mori no Irodori without staying overnight?
Listed as a day-use onsen: a bath for day visitors by definition. No visitor review states otherwise.
How much does Tama Sakai Natural Hot Spring Mori no Irodori cost?
Weekday admission is about 880 yen, while weekend/holiday admission runs roughly 980 to 1000 yen, with one visitor reporting 1020 yen during the Obon holiday period in 2026.
Is the water free-flowing spring water?
The outdoor bath is explicitly described as source-fed (kakenagashi) hot spring water.
