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Kawazu Nanadaru Onsen

Kawazu, Shizuoka Prefecture, Japan
Kawazu Nanadaru Onsen
Location
Kawazu, Shizuoka Prefecture, Japan
Water type
bicarbonate
Temperature
38 °C
pH
8

Water profile

Thermicity
Neutral
38 °C
LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Kawazu Nanadaru Onsen is located in Kawazu Town, Kamo District, Shizuoka Prefecture along National Route 414, forming part of the Kawazu Onsenkyo — the seven-spring hot spring group of Kawazu — a thermal cluster on the Izu Peninsula whose collective identity encompasses a series of distinct spring sites distributed across a scenic river valley famous for its early-blooming Kawazu cherry trees that attract visitors from across Japan each February. The spring occupies its place within the Kawazu seven-spring count, which in some classifications is subdivided differently — distinguishing Otaki and Nanadaru as separate springs within the seven-spring group — reflecting the nuanced Japanese tradition of counting and naming hot spring clusters with careful attention to the distinct geological and topographic character of each individual source. Kawazu Nanadaru Onsen contributes to one of the Izu Peninsula's most distinctive thermal landscapes, where the combination of early cherry blossoms, multiple spring sources, waterfall scenery, and the mild Izu coastal climate creates a destination of exceptional seasonal beauty and geothermal variety.

Insider tip — Kawazu Nanadaru Onsen occupies the Kawazu River gorge in the southern Izu Peninsula, Shizuoka Prefecture, famed for its seven dramatic waterfalls (nanadaru). The bicarbonate-rich waters here are gentle on the skin and complement the lush subtropical vegetation that lines the river canyon. February brings the celebrated Kawazu Cherry Blossom Festival, when pale pink blooms frame the steaming outdoor baths. The Izu Peninsula's mild climate means bathing season extends year-round.
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Frequently asked questions

How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).