Natural Hot Spring Isesaki Yumaaru

Natural Hot Spring Isesaki Yuma-ru is a day-use hot spring facility located in Isesaki City, Gunma Prefecture. It boasts a 'Beauty Skin Bath' where you can enjoy 100% free-flowing bicarbonate spring water from a depth of 1,500 meters underground. The men's tower sauna is a large sauna with a five-tier structure, allowing you to sweat thoroughly at different temperature zones on each tier. The cold plunge bath is supplied with free-flowing cold well water, offering a sharp cooling experience. Every Friday, Saturday, and Sunday, the 'Blast Hurricane Heat Wave' event is held, where an overwhelming heat wave released by a blower envelops your entire body. The facility also includes the Yuma-ru Tei dining area and a totonou room, making it a comfortable bathing facility to spend the whole day.

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1136-9 Ota-cho, Isesaki City, Gunma Prefecture
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Facility Name
Natural Hot Spring Isesaki Yumaaru
Facility Type
Onsen & Spa
Address
1136-9 Ota-cho, Isesaki City, Gunma Prefecture
Website
https://yumarl.com/
Closed Days
None
Business Hours
Friday 09:00〜00:00
Monday 09:00〜00:00
Sunday 09:00〜00:00
Holiday 09:00〜00:00
Tuesday 09:00〜00:00
Saturday 09:00〜00:00
Thursday 09:00〜00:00
Wednesday 09:00〜00:00
Tattoo Policy
🚫 No Tattoos

♨️Hot Spring Information

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Yuma-ru Raw Source Spring
Natural Hot Spring
Flow-through
Bicarbonate spring water gushing from about 1,500 meters underground. It is supplied 100% free-flowing from the source, allowing you to indulge in the luxury of always bathing in fresh hot spring water. Known as the 'Beauty Skin Bath,' it is expected to smooth and refine the skin. The texture of the water is soft, gently enveloping the body heated by the sauna or cold plunge bath, providing a lasting sensation of warmth from the core. The facility also features Yuma-ru Carbonated Source Spring and Nano High-Concentration Carbonated Spring, where you can enjoy a sensation like soda with fine bubbles adhering to the skin, promoting blood circulation and activating metabolism. With a variety of baths such as open-air baths, cypress baths, jet baths, and electric baths, you can enjoy the diverse pleasures of soaking in hot springs.

Sauna & Cold Bath Information

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タワーサウナ
Male
100°C
A large tower sauna. The bench has a five-tier structure, with the 1st and 2nd tiers having slightly lower temperatures, allowing beginners to sweat comfortably, while the 3rd tier and above satisfy advanced users with high temperatures. The top 5th tier exceeds a perceived temperature of 100°C, causing sweat to gush out with overwhelming heat. Every Friday, Saturday, and Sunday, the 'Blast Hurricane Heat Wave' event is held, where the heat accumulated in the upper layers of the sauna is released at once by a blower, allowing you to experience a blast heat wave that envelops your entire body. The quality of heat differs on each tier, allowing you to adjust and enjoy according to your level.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
20people
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Cold Bath
Male
18°C
A cold plunge bath supplied with free-flowing cold well water. Fresh well water constantly flows in, ensuring clean and pleasant water quality. On weekends, the 'Water Column Event' features a vigorous release of water, temporarily lowering the water temperature, allowing you to enjoy the refreshing sensation of tightening the sauna's heat with cold water.
Water Quality
Groundwater
✓ Flow-through