Right Onsen › Gunma › Minakami
Okudaira Yushinkan onsen
4.1★ · 712 Google ratings · Minakami, Gunma · 奥平温泉 遊神館
✓ Natural hot-spring water✓ Free-flowing source water✓ Outdoor bath✓ Rest area✓ Restaurant
Before you go
Can you bathe here?
Tattoos
Not known · call aheadno policy stated in the 34 recent reviews we read or on the facility's website
Hours
10:00–20:00 · closed Thursdayfrom the facility listing
The bath
What you’ll find
A rustic, family-run countryside day onsen near Minakami/Sarugakyo with an outdoor bath, low-temperature sauna, a genuinely cold (30C) kakenagashi plunge bath, and a well-loved restaurant famous for catfish tempura rice bowls and handmade soba; a price increase from around 700 yen took effect around July 2026.
Outdoor bath
✓ YesA small outdoor bath is part of the multiple tubs on offer.stated by 4 visitors · Apr 2026 – Jul 2026
Sauna
✓ YesA low-temperature (around 70C) far-infrared sauna is available.stated by 5 visitors · Mar 2026 – Aug 2026
Cold bath
✓ YesThe kakenagashi bath itself runs cold (about 30C), functioning as a natural cold plunge.stated by 3 visitors · Jul 2026 – Aug 2026
Rest area
✓ YesA large tatami rest hall plus private rooms are available for resting and eating.stated by 3 visitors · Mar 2026 – Jun 2026
Restaurant
✓ YesAn on-site restaurant serving catfish tempura rice bowls (kaminari-ju), handmade soba and local produce is a major draw, though one reviewer had a very slow, disappointing meal.stated by 10 visitors · Mar 2026 – Aug 2026
The water
Free-flowing (kakenagashi)
✓ YesA kakenagashi spring-fed cold plunge bath (around 30C) is a distinctive feature.stated by 3 visitors · Jul 2026 – Aug 2026
Spring type
Alkaline simple springThe spring is classified as an alkaline simple (tanjun) type.stated by 1 visitor · Dec 2025
Source temperature
30°CThe kakenagashi source bath runs at about 30C.stated by 1 visitor · Aug 2026
Practical
What to bring
Lockers
✓ Coin returnedLockers use a refundable 100 yen coin system.stated by 3 visitors · May 2026 – Aug 2026
Hair dryer
PaidHair dryers require a 100 yen coin.stated by 2 visitors · Jun 2026 – Aug 2026
Guide
What visitors add
Outdoor bath & sauna
There is an outdoor bath (5 reviews; one calls it smallish but comfortable) and a low-temperature sauna (4 reviews: two call it low-temp, one measured around 70C, one calls it far-infrared with good sweating). One reviewer lists the lineup as main bath, rotenburo, jacuzzi, medicinal bath and onsen bath.
stated by 8 visitors · Mar 2026 – Aug 2026Price
Admission was 700 yen as of May 2026 per one reviewer, who considered it cheap even after a price rise; another (June 2026) reports a further increase from July 2026 plus a discount passport to be issued for local residents. It is a municipally run (choei) day-use onsen per one reviewer, and 3 others independently call the pricing cheap or very reasonable.
stated by 5 visitors · Mar 2026 – Jun 2026Price
Discounts are substantial: 2 reviewers used a JAF member discount (one paid under 600 yen as of July 2026, calling the discount rate surprisingly high), 2 booked discounted plans via Jalan (one calling the discount rate high), and 1 lists further discounts such as the traffic-safety association.
stated by 5 visitors · Mar 2026 – Aug 2026The water
One reviewer identifies it as an alkaline simple hot spring (visit noted December 2025). The heated tubs run mild — 4 distinct reviewers describe the water as lukewarm-ish or 'not too hot, just right', which suits long soaks.
stated by 5 visitors · Apr 2026 – Jun 2026Water handling
The kakenagashi (free-flowing source) tub is the COLD one: the source flows unheated at about 30C (one reviewer's figure), used as a cold/cool plunge — 4 distinct reviewers describe alternating between warm tubs and the cold source bath; no reviewer states how the heated tubs are supplied.
stated by 4 visitors · Jul 2026 – Aug 2026Towels, soap & lockers
Bring 100-yen coins: lockers and the hair dryer take them (one reviewer says the lockers are coin-return type; another complains the 100-yen locker charge was not mentioned at reception; dryers are listed as paid by a third). The women's bath has a Dyson dryer per one reviewer. Free Wi-Fi is available per one reviewer.
stated by 3 visitors · May 2026 – Aug 2026Timing
When to go
Quietest Friday around 10:00; busiest Saturday around 17:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
| Day | Hours |
|---|---|
| Monday | 10:00–20:00 |
| Tuesday | 10:00–20:00 |
| Wednesday | 10:00–20:00 |
| Thursday | Closed |
| Friday | 10:00–20:00 |
| Saturday | 10:00–20:00 |
| Sunday | 10:00–20:00 |
Closed Thursday.
Practical
Plan your visit
📍 378 Irisukawa, Minakami, Tone District, Gunma 379-1416
🚃 Jomo-Kogen station, 9.4 km
📞 +81278-64-2626
📋 Show at the counter: 奥平温泉 遊神館
Nearby
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Minakami · 4.1★
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