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Find your perfect onsen in 4 simple steps
Tap your way through symptoms, area, stay style, and water temperature. Our database of 10 spring types and therapeutic indications picks the single hot spring that fits you best.
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- 1Symptom
- 2Region
- 3Day trip / Overnight
- 4Temperature
Browse onsens across Japan
Featured onsen town this week
Located in Hita, Oita Prefecture, Amagase Onsen is a historic hot spring area with a legacy of over 1,300 years. It's famous for its rustic, open-air riverside baths. The abundant sulfur springs are said to promote silky skin and offer a balneotherapy experience for deep relaxation.
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Autamu Natural Onsen Shiawase no Yu
Salt content forms a protective barrier on the skin and prevents moisture and heat from escaping the body even after bathing. Boosts heat retention and has moisturizing effects.
See features & indications▾
※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.
Welling from Nonoichi, Ishikawa, this source has been a natural energy since its 2008 survey. As a low-osmolar chloride spring, it penetrates quickly to warm the body gently. The lingering heat after bathing helps release tension, making it ideal for those with cold hands and feet or seeking deep relaxation from daily fatigue.
Welling from Nonoichi, Ishikawa, this source has been a natural energy since its 2008 survey. As a low-osmolar chloride spring, it penetrates quickly to warm the body gently. The lingering heat after bathing helps release tension, making it ideal for those with cold hands and feet or seeking deep relaxation from daily fatigue.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
A rare radioactive spring where trace radiation absorbed via inhalation and skin is expected to stimulate cells (the "hormesis effect").
Salt content forms a protective barrier on the skin and prevents moisture and heat from escaping the body even after bathing. Boosts heat retention and has moisturizing effects.
See features & indications▾
※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.
Nestled in the scenic town of Matsuyama, this spring has long been cherished for relieving traveler fatigue, boasting robust eagle-like properties. The hypertonic chloride waters envelop the skin, smoothly expelling excess fluids and metabolic waste. The lightness after bathing and deep-penetrating warmth soothe the mind and body, freeing you from daily stress. Ideal for those with chronic stiffness or cold extremities, and perfect for weekend rejuvenation.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
Salinity comparable to seawater. The salt film traps heat for outstanding warmth ("hot bath spring").
Nestled in the scenic town of Matsuyama, this spring has long been cherished for relieving traveler fatigue, boasting robust eagle-like properties. The hypertonic chloride waters envelop the skin, smoothly expelling excess fluids and metabolic waste. The lightness after bathing and deep-penetrating warmth soothe the mind and body, freeing you from daily stress. Ideal for those with chronic stiffness or cold extremities, and perfect for weekend rejuvenation.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
Salinity comparable to seawater. The salt film traps heat for outstanding warmth ("hot bath spring").
Sodium bicarbonate cleanses the skin of old keratin and excess sebum, leaving skin soft and smooth. Expect beautiful skin after bathing.
See features & indications▾
※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.
Gushing forth in Beppu, one of Japan's premier hot spring resorts, this water has long moisturized the skin of spa-goers. With a weakly alkaline pH of 8.2, the water gently envelops the skin like a beauty serum, softening it for a smooth feel. After bathing, you'll notice a supple texture and a warmth that radiates from your core. It's a healing spring, perfect for those seeking to reset mind and body away from daily life, or for anyone concerned about dry skin.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
Gushing forth in Beppu, one of Japan's premier hot spring resorts, this water has long moisturized the skin of spa-goers. With a weakly alkaline pH of 8.2, the water gently envelops the skin like a beauty serum, softening it for a smooth feel. After bathing, you'll notice a supple texture and a warmth that radiates from your core. It's a healing spring, perfect for those seeking to reset mind and body away from daily life, or for anyone concerned about dry skin.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
Salt content forms a protective barrier on the skin and prevents moisture and heat from escaping the body even after bathing. Boosts heat retention and has moisturizing effects.
See features & indications▾
※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.
An historic spring gushing forth in Kannawa, Beppu, one of Japan's premier onsen destinations. With an extremely high temperature of 97.5°C, this free-flowing spring holds the earth's powerful energy. The heat-retaining properties of this chloride spring ensure lasting warmth after your bath, gently enveloping a mind and body troubled by cold or fatigue. The weakly acidic water keeps the skin clean, while abundant metasilicic acid provides moisture. When you need to escape the daily hustle and warm yourself from the core, this onsen offers deep tranquility and vitality.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
An historic spring gushing forth in Kannawa, Beppu, one of Japan's premier onsen destinations. With an extremely high temperature of 97.5°C, this free-flowing spring holds the earth's powerful energy. The heat-retaining properties of this chloride spring ensure lasting warmth after your bath, gently enveloping a mind and body troubled by cold or fatigue. The weakly acidic water keeps the skin clean, while abundant metasilicic acid provides moisture. When you need to escape the daily hustle and warm yourself from the core, this onsen offers deep tranquility and vitality.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
Sodium bicarbonate cleanses the skin of old keratin and excess sebum, leaving skin soft and smooth. Expect beautiful skin after bathing.
See features & indications▾
※ Only at facilities permitted to serve drinking water. 200–500 mL/day recommended.
A blessed spring gushing forth in Okuhida Onsen-go, nestled in the heart of the Northern Alps. With a long history of healing the minds and bodies of travelers and bathers, this source is renowned as a 'silky skin spring' due to its abundant bicarbonate ions that smooth the skin. As you immerse yourself, the faint scent of hydrogen sulfide will help release you from the hustle and bustle of daily life. It is recommended for those who wish to refresh both mind and body and seek deep tranquility in nature.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
A "beauty spring" that gently emulsifies dead skin cells, leaving skin smooth after bathing.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
A blessed spring gushing forth in Okuhida Onsen-go, nestled in the heart of the Northern Alps. With a long history of healing the minds and bodies of travelers and bathers, this source is renowned as a 'silky skin spring' due to its abundant bicarbonate ions that smooth the skin. As you immerse yourself, the faint scent of hydrogen sulfide will help release you from the hustle and bustle of daily life. It is recommended for those who wish to refresh both mind and body and seek deep tranquility in nature.
Scores are calculated from mineral analysis data based on the Mineral Spring Analysis Guidelines (Ministry of Environment, Japan). They are unrelated to facility atmosphere or service quality.
Undissociated boric acid with antibacterial action that keeps the skin surface clean.
A "beauty spring" that gently emulsifies dead skin cells, leaving skin smooth after bathing.
A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.
The aroma typical of sulfur springs, with circulatory and antibacterial effects.
The 10 great spring types
- SIMPLE単Simple SpringGentle on everyone, the family bath
- CHLORIDE塩Chloride SpringLocks in heat — the warming bath
BICARBONATE重Carbonated SpringSilky skin — the beauty bath
SULFATE硫Sulphate SpringThe healing & stroke bath
CO2炭Carbon Dioxide SpringThe heart & sparkling bubble bath
IRON鉄Ferruginous SpringReddish-brown bath for anemia
ACIDIC酸Acidic SpringSharp, strongly antibacterial
IODINE沃Iodine Containing SpringRare amber-brown spring
SULFUR黄Sulphur SpringSulphur-scented, lifestyle-disease bath
RADON放Radioactive SpringRare "cure-all" spring
Featured columns
- 塩SPRING TYPEMay 5, 2026· 2min read
Chloride Springs: Benefits, Indications & Recommended Onsen
Chloride springs (Cl⁻ as the main anion) are known as "the hot-retaining waters" because the salt coating on your skin keeps body heat from escaping after bathing. Excellent for cold sensitivity and dry skin.
- 郷famous-onsenMay 28, 2026· 2min read
Kakeyu Onsen: A Healing Retreat in Nagano for Mind and Body
Discover Kakeyu Onsen, a tranquil hot spring village in Nagano, said to have been revealed by a deer. Known as the "spring where you forget your cane," its waters are used for rehabilitation. Experience deep relaxation and pain relief on a wellness journey to restore your balance.
- SiO₂MINERALMay 5, 2026· 2min read
Metasilicic Acid: The "Beauty Spring" Standard Mineral & Top 5 Onsen
Metasilicic acid (H₂SiO₃) is a natural moisturizer also found in skincare lotions. Hot springs containing more than 50mg/kg are called "beauty springs" — leaving skin hydrated long after bathing. This is one of the therapeutic spring criteria in Japan's Mineral Spring Analysis Guideline (Table 1-1).
- 症SYMPTOMSMay 6, 2026· 1min read
Hot Springs for Cold Sensitivity | 4 Spring Types Explained
Discover which hot spring types are officially indicated for cold sensitivity and peripheral circulatory disorders, based on Japan's Ministry of the Environment guidelines. Chloride springs form a heat-retaining salt film on the skin, while carbon dioxide springs dilate blood vessels directly through the skin without stressing the heart.
- 礼ETIQUETTEMay 6, 2026· 2min read
Japanese Onsen Etiquette Guide | Washing, Towels & Bathing Rules
Japan's hot spring culture places high value on cleanliness and consideration for others. Here's everything first-time onsen visitors need to know — from the changing room to the bath.
- 単SPRING TYPEMay 5, 2026· 1min read
Simple Springs (Tanjun Onsen): Gentle Waters for Everyone
Simple springs have dissolved components below 1,000 mg/kg and a source temperature of 25°C or above. Mild and non-irritating, they are safe for all ages. Alkaline simple springs (pH 8.5+) are famous for leaving skin silky smooth.