[Summer Only] “Chilled Onsen” Available Again in 2026
As part of the Hakone Promotion Forum Onsen Facility Collaboration Project,
we will be offering the popular “Chilled Onsen” again in 2026.
At Yamato-kan, you can enjoy a free-flowing hot spring (100% natural, straight from the source) at around 38°C—recommended by our proprietress, an Onsen Sommelier Instructor—as “the most relaxing temperature for summer,”
in a private bath!
*The usual temperature is 38°C to 41°C.
[Period]
June 15, 2026 (Mon) – end of September
*Depending on the outdoor temperature, the water may be adjusted to around 38°C.
By guest request, starting in FY2026, from 14:00 to 17:00 we will offer Hakone’s oldest hot spring as
[Why You’ll Love Chilled Onsen]
A new style of Onsen that is also eco-friendly.
Refresh both body and mind with pleasantly lukewarm water and enjoy a range of expected benefits.
Main Benefits
1. Fatigue recovery: Hot spring minerals help soothe tiredness—perfect for bodies worn out by extreme heat.
2. Improved circulation: Even lukewarm water promotes healthy blood flow and supports metabolism.
3. Beautiful skin: Gentle warmth plus mineral content leaves your skin feeling soft and hydrated.
4. Stress relief: The comfortable mild temperature helps you relax both physically and mentally.
5. Family-friendly: The lower temperature makes it safe and comfortable for children as well.
- Skincare set: Free of charge
- ReFa shower head: Free of charge
- ReFa hair dryer & hair iron rental: Free of charge
This summer, unwind with a refreshing moment of relaxation in Yamato-kan’s “Chilled Onsen.”













