Sakura Natural Hot Spring Sumiryu
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Sakura Natural Hot Spring Sumiryu

Sakura Natural Hot Spring Sumiryu is a day-use hot spring facility located in Sakura City, Chiba Prefecture. The blast auto löyly sauna envelops your entire body with heat and steam, while the yomogi mud salt sauna refines your skin with steam and packs. Gently cool down in the ultra-soft cold plunge bath, and deeply relax on the Yakushima cedar totonoi deck. The private source, Sakura Someino Onsen, is a strong saline hot spring known as 'Netsu no Yu,' where you can soak in a high-retention heat bath while gazing at the bamboo grove in the open-air rock bath. The facility also offers stone saunas, carbonated baths, and a lounge, providing a relaxing time from 7 AM until late at night.

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Address
4-7 Someino, Sakura City, Chiba Prefecture
View on Google Maps
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Business Hours
Friday 07:00〜00:00
Monday 07:00〜00:00
Sunday 07:00〜00:00
Holiday 07:00〜00:00
Tuesday 07:00〜00:00
Saturday 07:00〜00:00
Thursday 07:00〜00:00
Wednesday 07:00〜00:00
💡 Closed on the second Thursday of March, June, September, and December
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Closed Days
None
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Facility Type
Onsen & Spa
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Tattoo Policy
🚫No Tattoos
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Hot Spring Information

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Sakura Someino Onsen

Natural Hot SpringFlow-through

A private source springing from underground, known as 'Netsu no Yu' due to its high salt concentration, this strong saline hot spring feels like a salt film wrapping your skin, warming you from the core. In the source-fed rock bath, you can soak in fresh water while gazing at the bamboo grove, fully experiencing the heat retention effect. The warmth continues long after bathing, making it particularly effective for those with cold sensitivity or poor circulation. The salt's antibacterial properties also smooth the skin, with potential improvements for dry skin. By using different temperature zones in the indoor and open-air baths, the warming effect deepens in stages.

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Sauna & Cold Bath Information

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Blast Auto Löyly Sauna

90°C

Enjoy the signature blast löyly of Sumiryu in this high-temperature sauna. When the red light turns on, water is automatically sprayed onto heated stones, filling the room with steam rich in negative ions. The sudden wave of heat envelops your entire body, inducing deep sweating until your pores fully open. In the spacious room, you can quietly focus on yourself and thoroughly sweat it out. The large window offering a view of the bamboo grove adds a refreshing touch to the sauna's heat.

Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
12people
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Yomogi Mud Salt Sauna

60°C

A steam sauna that polishes your skin with a trio of yomogi steam, mud pack, and salt. In the steam-filled room, the scent of yomogi fills your nostrils, while mud and salt adhere to your skin. The gentle heat gradually warms you, softening dead skin cells and purifying deep into your pores. Unlike high-temperature saunas, this is a time dedicated to beauty and relaxation. The smooth skin sensation continues even after you leave the bath.

Sauna Type
Salt Sauna
Stove Type
Built-in Stove
Capacity
4people
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Ultra-Soft Cold Plunge Bath

18°C

A cold plunge bath using ultra-soft water that is gentle on the skin and hair. With just the right level of coolness, it allows you to slowly cool down your heated body. The mellow quality of the ultra-soft water envelops your skin, causing no stress to sensitive post-sauna skin. By soaking thoroughly, your pores tighten, and the heat retention effect increases. The gentle water quality is favored by repeat visitors.

Water Quality
Soft Water
Capacity
4people