Onjuku Onsen

Onjuku Onsen is located in Onjuku Town, Chiba Prefecture, on the Sotobo coast of the Boso Peninsula facing the Pacific Ocean, a surf town celebrated since the 1960s as one of Japan's pioneering surfing destinations where the powerful Pacific swells attract wave riders from across the Kanto region to its golden sand beach. The siliceous thermal waters here provide warm mineral spring recovery for surfers, swimmers, and beach visitors in one of Chiba's most lifestyle-oriented coastal communities, where the intersection of surf culture, fresh seafood, and hot spring bathing creates a distinctive southern Boso coastal identity. Bathing at Onjuku Onsen after a day of Pacific surf and sun offers one of Japan's most satisfying active coastal wellness experiences, combining the physical energy of ocean recreation with the restorative warmth of therapeutic siliceous mineral bathing in a setting that perfectly embodies the easy, sun-drenched character of the outer Boso coast.