Nuka Onsen
- Location
- Komatsu, Ishikawa, Japan
- Water type
- sodium chloride
- Temperature
- 42 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Nuka Onsen is a traditional hot spring establishment set in Komatsu, a historic city in Ishikawa Prefecture on the Sea of Japan coast, within the Hokuriku region celebrated for its refined craftsmanship, Kenroku-en garden and the cultural richness of nearby Kanazawa. The onsen occupies a distinct place within this landscape of seasonal beauty and deeply rooted bathing culture.
The water is sodium-chloride in character — a saline composition that produces a pleasant warming sensation on the skin and leaves a subtle mineral residue, a signature quality appreciated by regulars and travellers alike. At 42 °C and a near-neutral pH of 7.3, the bath temperature is bracing rather than languorous, consistent with the invigorating style favoured along this stretch of Honshu's coast. Guests typically follow a slow rhythm of immersion, rest and immersion again, as practised in the oldest Japanese bathing traditions.