Onsen OniOnsen Oni

Search Onsen Oni

Search onsen, areas, prefectures and pages.

Yamamiya Hot Spring

山宮温泉やまみやおんせん

Public Bathhouse
Chubu·Yamanashi

Day Use

Yes
Mon10:00–22:00
Tue10:00–22:00
WedClosed
Thu10:00–22:00
Fri10:00–22:00
Sat10:00–22:00
Sun10:00–22:00

except Wednesdays

¥700

Bathing & Water

Natural onsen water

Uses natural hot spring water

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Cold BathYes

Cold water plunge bath, typically used after sauna

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

山宮温泉

Yamamiya Hot Spring

Operated by · 有限会社コスモスコーポレーション

Chloride
Color
colorless and clear
Taste
tasteless
Odor
odorless

Sodium Chloride spring

pH 7.7Weakly alkaline
Composition fingerprint1.4 g/kg dissolved · Hypotonic
Na⁺83
Ca²⁺15
Cl⁻92
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Smooth skindry, rough skin
  • Cutsminor wounds

A sodium chloride spring — salty and notably heat-retaining. It is weakly alkaline and soft on the skin, and the sensory test records it as colorless, clear, tasteless and odorless. With 1,366 mg/kg of dissolved solids it is moderately mineralized, giving the water a noticeable body.

Sampled at wellhead·Analyzed Feb 18, 2019·株式会社メイキョー·Cert no. M18-4425

Explore the water

Loading map…

2.0

1 review

5
0
4
0
3
0
2
1
1
0
SM
Sergey M
1 year ago

543. Yamamiya Hot Spring, Kofu, Yamanashi Onsen for 700. Located far away. The entrance area is modern; the place is cool and popular — on Sunday evening there were lots of young people and old men alike. Operating hours are listed as 10:00 to 22:00 (closed Wed). They stamp the Yamanashi 100 Onsen book. Bath photos are from the internet, roughly match — I visited in the evening. Indoor area. Breathing inside is fine. 1. Bath with clear water, temperature around 42-43. 2. Bath with clear water, temperature around 38-39. 3. Sauna. 4. Cold bath. 11.05.2025

1
2
3
4

Last updated July 3, 2026