Best onsen for Insomnia in Yamanashi

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

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Asahi Onsen Chloride Spring
Chloride SpringCarbonated SpringInfo pending
Asahi Onsen
韮崎旭温泉;韮崎旭の湯
Yamanashi Nirasaki, Yamanashi· あさひ温泉
Gentle healing spring

Asahi Onsen, nestled in Nirasaki City's hilly terrain overlooking the magnificent Southern Alps, offers a truly soothing experience. Its lukewarm waters, at 38.2°C, are celebrated for their silky skin-beautifying texture and a unique salt veil that provides restorative warmth, deeply penetrating the body. A long, unhurried soak here allows for deep relaxation, gently unwinding daily tensions. Embraced by lasting warmth even after bathing, this locally rooted healing spring is perfect for those seeking to reset their mind and body away from the daily hustle.

Day-use Bath
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHMildly Alkaline7.9
TEMP38.2
KEY MINERALS
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PRIncludes affiliate links
Isawa Onsen Simple Spring
Simple SpringInfo pending
Isawa Onsen
旅館 日の出温泉
Yamanashi Fuefuki· 旅館 日の出温泉1Isawa Onsen
Gentle Mildly Alkaline Waters

Nestled in Kasugai-cho, Fuefuki City, Yamanashi Prefecture, a region renowned for its grape cultivation, this gentle hot spring is a true blessing from the earth, cherished by locals for generations. Its lukewarm waters, around 36.3℃, offer a comfort that invites you to linger indefinitely. The soft, weakly alkaline water delicately envelops the skin, gradually releasing tension from the body's core. It's a soothing retreat for those seeking to alleviate daily fatigue and find deep relaxation in mild waters.

Onsen RyokanPrivate Rental BathTattoo OK (public bath)
StimulationBactericidalSkin BeautyHeat RetentionRelaxation
pHMildly Alkaline8.31
TEMP36.3
KEY MINERALS
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PRIncludes affiliate links

Why onsen are considered good for Insomnia

The benefits of an onsen vary by spring type. Certain spring types are traditionally considered good for Insomnia, 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.