No. 60 · Tochigi
Nasu Onsen
Nasu Onsen ranked No. 60 in the published 2025 Japan hot-spring destination list. Check bathing options, access and stay details before planning your visit.
Spring information
Water and bathing details for Nasu Onsen
Facility-level figures; blank town-wide averages are not inferred.
Named facility records for Nasu Onsen. Figures marked “Not published” are not treated as town-wide averages.
| Facility | Spring | Source data | Supply | Bath type |
|---|---|---|---|---|
| Shikanoyu, Nasu Onsen | Simple acidic sulfur hot spring (hydrogen-sulfide type); acidic, low-tonicity, high-temperature spring. Source: A blend of Shikanoyu and Gyōnin-no-yu springs. | Source temperature: 53.7°C for the Shikanoyu–Gyōnin-no-yu blended spring, according to Nasu Town's tourism association bathing guide. pH: 2.4, according to Nasu Town's 2025 bathing guide. | Naturally emerging sulfur spring water from Nasu Yumoto feeds several pools at 41–48°C. The current main facility page does not detail water addition, heating, circulation or disinfection pool by pool; no unconfirmed treatment method is inferred. | Day-use bath. The first choice if you want Nasu Yumoto's history and traditional bathing culture. If you need to wash your hair and body after a hike, Kojika-no-yu is more practical. |
| Kojika-no-yu, Hanaya Hotel | Simple acidic sulfur spring. Source: A blend of Shikanoyu and Gyōnin-no-yu springs. | Source temperature: 53.7°C for the Shikanoyu–Gyōnin-no-yu blended spring. pH: 2.4, according to Nasu Town's bathing guide. | Nasu Town's tourism association lists the facility as using Shikanoyu spring water on a source-flowing basis, in the indoor bath and the women's outdoor bath. Full water addition, heating, circulation and disinfection conditions are not published for each pool. | Day-use bath. A low-cost way to try the Shikanoyu-area sulfur spring while still having practical washing facilities. It is the easier choice after a hike if you want to use shampoo and body wash. |
| Nakafujiya Ryokan (Day-Use Onsen) | Simple acidic sulfur spring Source: Shika-no-Yu spring, as identified by the inn | Source temperature: 57.2°C, according to Nakafujiya Ryokan pH: Not published on the inn's current main pages | The inn describes the bath as free-flowing from the source. Milky sulfur water fills the cypress bath. Overnight guests may bathe around the clock, but day visitors are limited to 11:00–15:00. | Ryokan. A quiet alternative to the public bath if you want Shika-no-Yu-style sulfur water in a cypress tub. Day-use access is not guaranteed, so check before setting out. |
Destination comparison
What this onsen town offers
History
71/100Spring character
80/100Town culture
72/100Seasonal scenery
73/100Access
69/100Local history
How the town developed
Four seasons
Seasonal conditions and travel rhythm
Plan your stay
Nasu Onsen: day trip or overnight?
Compare travel time, bath access and the time you want to spend in town.
Day trip
Check the first and last transport connections, then confirm which baths accept day visitors and when they stop admitting guests.
Nasu Onsen Day-Use Guide: Four Baths, Four Different VisitsOne-night stay
Compare the ryokan’s bath access with public day-use options and the journey back to your next stop.
Stay plus a day bath
Choose one bath experience for your stay and use a day facility for a different source or setting, where the published details support it.
Nasu Onsen Day-Use Guide: Four Baths, Four Different VisitsNearby destinations
Other places in the same prefecture in the published ranking.
Related guides
Guides to Nasu Onsen
Filter English guides by the question you need to answer.
Day-use bathsNasu Onsen Day-Use Guide: Four Baths, Four Different Visits
Choose between Shikanoyu, Kojikanoyu, Nakafujiya and Omaru Onsen for a Nasu day trip. Compare current admission, bathing rules, hours and bus access.
Read the guideSpring waterShikanoyu Guide: Nasu’s Hot, Short-Soak Sulphur Bath
Plan a visit to Nasu’s Shikanoyu: compare the bathing temperatures, learn why soap is prohibited, check current admission and hours, and reach the bath by bus.
Read the guideOfficial sources
