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Jinata Onsen
4.4★ · 143 Google ratings · Niijima, Tokyo · 地鉈温泉
✓ Day visitors✓ Outdoor bath✓ Kakenagashi
Before you go
Can you bathe here?
Day visitors
✓ YesConfirmed by recent visitor reports
Hours
00:00–24:00From the facility's listing
Tattoos
? Call aheadNo policy stated in the 42 recent reviews we read or on the facility's website
Price
Free adultConfirmed by recent visitor reports
How we know this
- Day visitors: Visitors report the spring is free and open 24 hours, though timing around the tide is essential to actually enter. · 3 visitors, May 2025 – Sep 2025
- Price: Entry is free of charge according to multiple reviews from 2025. · 3 visitors, May 2025 – Sep 2025
The bath
What you’ll find
Jinata Onsen is a free, 24-hour natural rock-pool hot spring on a rugged ocean coastline of Shikinejima, reached via a steep staircase, where bathing temperature depends heavily on the tide and there is no changing room.
Bath setup
Outdoor bath
✓ YesReported by two visitors
View
OceanReported by two visitors
Spring water
Spring type
iron sulfate springReported by one visitor
Source temperature
80°CReported by one visitor
Free-flowing (kakenagashi)
✓ FullFresh spring water flows continuously through the bath
How we know this
- Outdoor bath: The entire bath is an open-air natural rock pool on the coast, with no indoor bathing area. · 2 visitors, Jun 2025 – May 2026
- View: The bath sits directly on a rocky ocean coastline with open sea views. · 2 visitors, Jun 2025 – Aug 2025
- Spring type: A 2024 review identified the reddish-brown coastal spring water as an iron sulfate type similar to Furofushi Onsen. · 1 visitor, Nov 2024
- Source temperature: One visitor in 2025 reported the source water temperature at about 80°C, requiring seawater mixing to cool it. · 1 visitor, Oct 2025
- Free-flowing (kakenagashi): The spring flows naturally from the source with no recirculation, mixing directly with seawater as the tide changes. · 3 visitors, Sep 2024 – Oct 2025
Guide
Good to know
Source temperature
One visitor in 2025 reported the source water temperature at about 80°C, requiring seawater mixing to cool it.
Reported by one visitorTiming
When to go
Quietest Monday around 15:00. Busiest Friday around 4:00.
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 00:00–24:00 |
| Tuesday | 00:00–24:00 |
| Wednesday | 00:00–24:00 |
| Thursday | 00:00–24:00 |
| Friday | 00:00–24:00 |
| Saturday | 00:00–24:00 |
| Sunday | 00:00–24:00 |
Getting there
How to get there
Nearest station
Minami-machida Grandberry Park134.8 km in a straight line; bus or taxi from the station
Address
1006 Shikinejima, Niijima, Tokyo 100-0511From the facility's listing
Show a driver
地鉈温泉The name in Japanese, for a taxi or at the counter
Phone
+814992-7-0170Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
shikinejima.tokyoOfficial, 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 Jinata Onsen without staying overnight?
Visitors report the spring is free and open 24 hours, though timing around the tide is essential to actually enter.
How much does Jinata Onsen cost?
Entry is free of charge according to multiple reviews from 2025.
Is the water free-flowing spring water?
The spring flows naturally from the source with no recirculation, mixing directly with seawater as the tide changes.
