Nushima Onsen Awaji
- Location
- Nushima, Awaji Island, Hyogo Prefecture, Japan
- Water type
- sodium chloride
- Temperature
- 43 °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.
Nushima Onsen Awaji is a remote hot spring in the Nushima district of Minamiawaji, the southernmost city on Awaji Island, Hyogo Prefecture, Japan, at the island's tip where the Pacific-fed Kii Channel and the Seto Inland Sea currents meet, creating a distinctive marine environment rich in fish, abalone, and sea urchin that supports one of the region's most prized seafood traditions. The naturally chloride-sodium saline spring waters here draw from the deep geological formations of southern Awaji and are valued for their marine-mineral warmth, skin-softening, and circulation-stimulating properties, offering a deeply relaxing soak in one of the Seto Inland Sea's most remote and atmospherically pristine coastal settings. The combination of Awaji Island's mythological status as Japan's cosmological 'first island,' the extraordinary marine landscape of the Kii Channel junction, and the genuine saline thermal bathing culture of Nushima provides a rare, windswept, and memorably atmospheric Japanese onsen experience.