Bousenkaku (Day Use)

Spring-source temperature

50.2°C, listed by the inn; this is the source temperature, not a fixed bath temperature

Bathing temperature

Not published as a fixed value; a bath diagram gives reference temperatures that vary with outdoor conditions

Spring source

Sakihana Onsen water used by Bousenkaku; an individual source name or well number is not confirmed on the current main pages

Spring classification

Simple sulfur spring (mildly alkaline, low-tonicity)

pH

Not published for the property

Flow rate

Not published for the property

Water handling

The outdoor bath is 100% free-flowing, and the small bath is free-flowing. The large bath uses a discharge-and-recirculation system. Hagoromo is generally free-flowing from spring water in spring through autumn, but uses recirculating heating on cold days and during winter. These conditions are bath-specific, not a whole-property rule.

Analysis date

50.2

Ordinary day use costs ¥800 for adults, ¥600 for children aged two through elementary school and is free under age two; each visit is limited to one hour. Call after 10:00 on the day because hotel occupancy, cleaning or maintenance may prevent admission. Meal-and-bath plans are separate and have minimum group sizes. The 50.2°C figure is source temperature only. Tattoo rules are unconfirmed.