Best onsen for Cold Sensitivity in Oita

This private source gushes in the Kitahama district, part of Japan's premier onsen resort, Beppu, overlooking the bay. Located in an area that has long flourished as an entertainment district, this spring has soothed countless travelers. Combining the qualities of a bicarbonate and a chloride spring, its waters gently exfoliate the skin while a veil of salt locks in moisture. After bathing, you can enjoy a unique texture that is both silky and deeply hydrated. It is a renowned spring perfect for releasing mind and body while feeling the Beppu sea breeze.

This ANA InterContinental Beppu Resort & Spa Tsuboyu Gensen source was developed using modern drilling techniques on a highland overlooking the historic, steam-filled streets of Kannawa, Beppu, a renowned therapeutic bathing area since the Kamakura period. A key feature is the dissolved salt, which gently envelops the skin to provide long-lasting warmth after bathing. It offers a moment of deep release for those seeking to connect with Beppu's magnificent nature.

Pumped from 1,000 meters beneath the Kuju Highlands in Aso-Kuju National Park, the Tenku no Daichi Kuju Kogen Hotel source is a true all-star spring, combining the properties of chloride, sulfate, and bicarbonate waters. Rich in metasilicic acid, a natural moisturizer, it leaves skin feeling smooth during the bath and wonderfully soft afterward. It's perfect for days when you want to deeply soothe body and soul while gazing at the majestic nature of the Kuju mountain range and Mount Aso.

This private source, Kusunoyu, gushes forth in the Beppu Onsen area, one of the eight springs of Beppu. While its name is associated with the historic "Kusunoki Onsen" public bath dating back to the Kamakura period, that bathhouse is now closed. This source features a balanced blend of skin-smoothing bicarbonate ions and core-warming chloride ions at a gentle pH of 8.2. As you steep in its waters, the slightly viscous texture envelops your skin, leaving it feeling moisturized and restoratively warm long after you emerge. It is perfect for those seeking to unwind both body and soul in a historic spa town.

Nagayu Onsen gushes along the Seri River at the eastern foot of the Kuju mountains in Naoiri, Taketa, and is celebrated as one of Japan's leading carbonated-spring towns, long praised as water that works both when drunk and when soaked in at length. The Daimaru Ryokan source rises at 46.8°C and carries a rich 4,480 mg/kg of minerals, led by 2,160 mg of bicarbonate and 263 mg of magnesium, plus 735 mg of free carbon dioxide. Its greenish, cloudy water leaves rust-brown scale-like deposits on tub edges and spouts.

Beppu Onsen, one of the eight hot spring districts of Beppu, is the historic heart of the city, with springs rising in the streets between the station and the sea. This water blends two wells drilled in seaside Kitahama in equal parts. Sea-born salt and bicarbonate dissolve in nearly equal measure, pairing lasting warmth with a smooth feel on the skin in a gentle, neutral, pale-yellow bath.

Kamioka Onsen flows on its own, without pumps, from a 170 m well drilled in 1957 in Beppu's Kannawa district. A 2025 analysis recorded 89.5°C and pH 9.0: an unusual alkaline sulfur spring in a town known for acidic sulfur waters, its sulfur dissolved as hydrosulfide ions rather than gas. Sodium 228.0 mg/kg, bicarbonate 279.0 mg/kg, sulfate 184.0 mg/kg and metasilicic acid 339.0 mg/kg give a clear water with a faint sulfur scent and a quiet, deeply comforting character.

Kannawa has long been known as a healing retreat for the wounded, and this hillside source rises on its own as near-boiling 98.1°C water. Rich in sodium and calcium with a balance of chloride and sulfate, the faintly milky water leaves white, scale-like deposits along the tub edges. With 220.0 mg/kg of metasilicic acid, it leaves skin moist and soft, suiting anyone who wants to warm up slowly while gazing over Beppu's rising steam.