Tenjin Hiratsuka
Hiratsuka, Kanagawa, Japan
- Location
- Hiratsuka, Kanagawa, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Located in Kanagawa Prefecture, East Japan, Tenjin Hiratsuka is a renowned thermal site known for its bicarbonate-rich water. This natural hot spring has been cherished by locals and visitors alike for centuries. Soak in the warm waters and rejuvenate your body and mind. The area offers a serene atmosphere, perfect for relaxation and contemplation.
Insider tip — Tenjin Hiratsuka is an urban onsen in the heart of Hiratsuka city in Kanagawa Prefecture, drawing sodium-chloride waters from deep Kanto plain sediments characteristic of the greater Tokyo metropolitan geothermal belt. The dark, tannin-tinged brine is notably warming and is said to retain body heat long after bathing, making it highly popular in winter. Hiratsuka is famous for its Tanabata festival in July, when the onsen pairs well with festival crowds. The easy Tokaido Line access from Tokyo makes it an ideal half-day city escape.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).