Best onsen for Anemia in Hokkaido

6 picks ranked from onsen analysis-sheet data (official, verified and free-flowing sources prioritised)

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Noboribetsu Onsen Acidic Spring
Acidic SpringFerruginous SpringSulphate SpringChloride SpringCarbonated SpringSulphur SpringSimple SpringVerified
Noboribetsu Onsen
第一滝本館大浴場
Hokkaido Noboribetsu· 1号甲泉 他 2 件Noboribetsu Onsen
Blessings of the Earth, Powerful Acidic Spring

This is one of the most well-known sources in Noboribetsu, a leading onsen destination in Hokkaido. It continuously flows at a high temperature of 96.5°C, embodying the raw power of the earth. The highly acidic water, with a pH of 2.2, provides a tingling sensation on the skin and a refreshing feeling after bathing. Its rich iron and sulfate content offers a powerful bathing experience that feels as if it's awakening both mind and body. It's a spring for those who wish to reset from daily fatigue, gain new vitality, and feel nature's energy throughout their entire being.

Onsen RyokanRoom with Open-air BathTattoo OK (public bath)
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHStrongly Acidic2.2
0714
TEMP96.5℃
0℃50℃100℃
KEY MINERALS

Undissociated boric acid with antibacterial action that keeps the skin surface clean.

16.9 mg/kg

Strong astringent action that tightens skin. A key component of acidic springs, suited to oily or acne-prone skin.

A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.

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Noboribetsu Onsen Chloride Spring
Chloride SpringFerruginous SpringAcidic SpringSulphur SpringSulphate SpringInfo pending
Noboribetsu Onsen
ホテルまほろば
Hokkaido Noboribetsu· 登別温泉5号泉 他 3 件Noboribetsu Onsen
Earth's Bounty Salt Waters

Originating from the dramatic Jigokudani (Hell Valley), the potent waters of Noboribetsu Onsen, a renowned hot spring resort in Hokkaido, have long welcomed those seeking therapeutic benefits. This powerful spring gently envelops the skin, delivering restorative warmth that penetrates deep into the body's core. The comforting heat lingers long after bathing, promoting deep relaxation and offering respite from the stresses of daily life. It is highly recommended for individuals desiring an authentic balneotherapy experience in Japan's northern frontier.

Onsen RyokanRoom with Open-air Bath
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHNeutral6.7
0714
TEMP94.9℃
0℃50℃100℃
KEY MINERALS

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.

4894 mg/kg

Boosts after-bath warmth and warms the body from the core.

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Noboribetsu Onsen Manseikaku Ferruginous Spring
Ferruginous SpringSulphur SpringAcidic SpringSimple SpringInfo pending
Noboribetsu Onsen Manseikaku
登別温泉 万世閣
Hokkaido Noboribetsu· 登別温泉 1号乙泉Noboribetsu Onsen
Hot Spring Department Store

Noboribetsu Onsen, Hokkaido's renowned hot spring, often called a 'department store of hot springs,' began its formal history in the Edo period when Takimoto Kinzo established a therapeutic bath. Despite the rugged landscape of 'Jigokudani' (Hell Valley), an explosive crater site said to be home to demons, the waters, a bounty from this earth, are filled with powerful healing. This acidic, sulfur-scented spring water thoroughly cleanses the skin and delivers restorative warmth deep into the body. It is highly recommended for those who wish to feel the energy of nature and experience a dynamic rejuvenation of mind and body.

Onsen RyokanPrivate Rental BathRoom with Open-air Bath
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHStrongly Acidic2.3
0714
TEMP72.5℃
0℃50℃100℃
KEY MINERALS
29.1 mg/kg

Strong astringent action that tightens skin. A key component of acidic springs, suited to oily or acne-prone skin.

The source of the distinctive sulfur smell. Dilates blood vessels via skin and inhalation to strongly boost circulation.

21.3 mg/kg

A trace component with gentle antibacterial and anti-inflammatory action.

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Ishida Onsen Acidic Spring
Acidic SpringFerruginous SpringSulphate SpringInfo pending
Ishida Onsen
石田温泉
Hokkaido Hakodate· 石田温泉
Mt. Esan Alum and Iron Spring

Ishida Onsen's source flows naturally on the flanks of Mt. Esan, an active volcano, and is piped about 2.5 km down, inheriting the spring once used by a highland hotel. The 1984 analysis shows pH 2.1 and 5.518 g/kg of dissolved solids, with 2,972 mg/kg of sulfate plus abundant aluminum and iron, in the lineage of classic alum and green-vitriol springs. Clear at the source, the water oxidizes to a cloudy yellow-brown in the bath, with a squeaky feel, sour taste and metallic scent that speak of the volcano.

Onsen Ryokan
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHStrongly Acidic2.1
0714
TEMP42.5℃
0℃50℃100℃
KEY MINERALS
433 mg/kg

Strong astringent action that tightens skin. A key component of acidic springs, suited to oily or acne-prone skin.

156 mg/kg

An iron-rich spring whose water turns yellow-brown to red-brown when exposed to air. Strong heat retention.

50.6 mg/kg

Undissociated boric acid with antibacterial action that keeps the skin surface clean.

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Keyama Onsen Ryokan Acidic Spring
Acidic SpringFerruginous SpringSulphate SpringInfo pending
Keyama Onsen Ryokan
恵山温泉旅館
Hokkaido Hakodate· 恵山温泉
Strongly Acidic Iron and Aluminum Waters at the Foot of Mt. Esan

Esan Onsen Ryokan sits in Kashiwano, Hakodate, at the foot of the active volcano Mt. Esan, and keeps the air of a traditional healing inn. It is said to have begun when an earlier generation gathered the springs they found into a hand-dug basin, and today the naturally flowing source still pours from a single inlet into wooden tubs and over their edges. The water is nearly clear with a faint yellow-green tinge, a scent of iron and a sharp acidity, and white deposits form around the inlet. It is a strongly acidic sulfate spring rare in Hokkaido, and because the water is lukewarm the inn closes in winter.

Onsen Ryokan
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHStrongly Acidic2.2
0714
TEMP40.2℃
0℃50℃100℃
KEY MINERALS
292 mg/kg

Strong astringent action that tightens skin. A key component of acidic springs, suited to oily or acne-prone skin.

88.9 mg/kg

An iron-rich spring whose water turns yellow-brown to red-brown when exposed to air. Strong heat retention.

A natural moisturizer also used in skincare lotions. Forms a thin veil on the skin to reduce moisture loss after bathing.

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Ryuno Yu Onsen Ferruginous Spring
Ferruginous SpringInfo pending
Ryuno Yu Onsen
龍乃湯温泉
Hokkaido Asahikawa· 龍乃湯温泉
Dragon-Dream Iron Spring

Local lore says this spring was found after a dream of the dragon god of a nearby shrine declaring that hot water lay beneath Higashiasahikawa. Clear at the wellhead, its abundant iron oxidizes in air, turning the bath an ochre hue with a distinctly squeaky, metallic feel on the skin.

Onsen Ryokan
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHNeutral6.4
0714
TEMP9.4℃
0℃50℃100℃
KEY MINERALS
23.2 mg/kg

An iron-rich spring whose water turns yellow-brown to red-brown when exposed to air. Strong heat retention.

A trace component with gentle antibacterial and anti-inflammatory action.

A natural moisturizer that leaves a hydrated feel on the skin.

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Choose a ryokan in Hokkaido

Why onsen are considered good for Anemia

The benefits of an onsen vary by spring type. Certain spring types are traditionally considered good for Anemia, and the corresponding indications are listed in the legally required onsen analysis sheets. my Onsen Techo ranks the onsen best suited to your symptom and area based on analysis-sheet data, which is mandated for display under Article 18 of Japan's Hot Spring Act. Each onsen page shows mineral visualisations, bathing tips and booking options.