Kiwado Onsen, Heki, Nagato, Yamaguchi Prefecture
Kiwado Onsen Exchange Center
A very good fit for a low-cost sea-view soak during a drive through northern Nagato. It is less convenient if you rely on public transport or need a private bath or full spa facilities.
Facility photos
Check before bathing
Spring & water temperature
- Spring-source temperature
- 31.2°C in Nagato City's published spring-temperature information; it is not identified as a 2026 remeasurement.
- Bathing temperature
- No fixed pool temperature is published.
- Spring source
- The spring used at Kiwado Onsen Exchange Center; its formal name was not confirmed on the current main text page.
- Spring classification
- Alkaline simple hot spring (low-tonicity, alkaline, cool spring), as described by the Yamaguchi Hot Spring Association.
- pH
- Not published in the current main official text pages reviewed.
- Flow rate
- Not published.
- Water handling
- Nagato City, its tourism and convention association, and the Yamaguchi Hot Spring Association confirm the use of natural spring water. The current main official text pages do not fully publish water addition, heating, circulation or disinfection conditions for the indoor bath, open-air bath and bubble bath.
Bathing indications
Nagato City lists general bathing indications including neuralgia and chronic digestive complaints. This is not a promise of personal treatment effects.
The boiler-failure closure in August 2026 ended when the facility reopened on 7 August. An earlier temporary outdoor-bath closure in November 2023 also ended that month; the current tourism page lists the outdoor bath as available. The 31.2°C figure is a source value, not a fixed bathing-pool temperature.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
