Recommended onsen in Aomori

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

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Furou Fushi Onsen Ferruginous Spring
Ferruginous SpringChloride SpringInfo pending
Furou Fushi Onsen
不老ふ死温泉
Aomori Fukaura, Nishitsugaru District· 黄金崎不老不死温泉 他 1 件
Rust-Red Waters of Koganezaki

The Koganezaki Furofushi Onsen source gushed up in 1970 when a well was bored 200 meters beneath the shore of Koganezaki, and its name expresses the wish that those who rest here will neither age nor weaken. Clear at the moment it emerges, the water oxidizes into a rust-red hue as its iron meets the air, while its dense salts wrap the body and let warmth linger deep inside. It soothes travelers who want to unwind slowly while the sun sinks into the Sea of Japan.

Onsen Ryokan
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHNeutral6.68
0714
TEMP53.6℃
0℃50℃100℃
KEY MINERALS
Chloride ion
13460 mg/kg

Salinity comparable to seawater. The salt film traps heat for outstanding warmth ("hot bath spring").

Magnesium ion
1031 mg/kg

Easily absorbed through the skin, helping to relax muscle stiffness during bathing — a transdermal nutrient unique to hot springs.

Bromide ion
45.7 mg/kg

Gentle calming action; often found alongside chloride.

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About onsen in Aomori

The benefits of an onsen vary by spring type. Aomori has a wide variety of spring types, each with different characteristics. 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.