Wild Hot Spring (Noyu) Map

Noyu are hot springs that bubble up naturally in the wild — in mountains, riverbeds, or forests — without any facility or operator managing them. There are no changing rooms or maintained baths, so water level and temperature shift with the season and weather. Reaching one is often part of the experience, including the hike and the scenery along the way.

This page introduces noyu that have been identified across Japan, shown on a map and in a list below. Each spot's detail page includes access directions and surrounding information where available.

Many noyu sit on private land, inside national parks, or near hazardous terrain. Stay out of restricted areas, check conditions such as flooding, volcanic activity, and wildlife risk beforehand, follow local etiquette, take your trash with you, and visit entirely at your own risk.

All Noyu in Japan

26 noyu found

Kagoshima

Iwojima Higashi Onsen

Acidic - Sulfur-containing - （ Sodium ） - Sulfate Spring (Hydrogen Sulfide Type), Aluminum - Iron(II) - Sulfate Spring

All Noyu in Japan

Iwojima Higashi Onsen

Sugaru no Tojiba (Sugaru Natural Hot Spring)

Kirishima Onsen Kawanoyu (River Bath)

Hiratanai Onsen Kuma-no-Yu

Ura Kattateno Noyou (Wild Hot Spring behind Kattateno Falls)

Tsubame Onsen Shomyo-daki no Yu

Kawarage Oyutaki (Hot Water Waterfall)

霧島温泉最古の岩風呂 目の湯

Ipponmatsu Hot Spring Tasuko no yu

Myouban hot spring Nabeyama no yu

Myouban Hot Spring Hibioyu

Myouban Hot Spring Tsurunoyu

Kinkayu Onsen

Akusekijima Island Kaichu HotSpring

Kawayu HotSpring Sennin Air Bath

Kanetsuri

Joufu no Taki Shita Onsen

Kagusa hot spring

Nakagake onsen

Kamuiwakka Falls

Douko no yu (Wild Hot Spring Onsen)

Shiriyaki onsen

Yumata Hot Spring

Ipponmatsu Hot Spring

燕温泉 河原の湯

Numajiri

霧島温泉最古の岩風呂目の湯

Akusekijima Island　Kaichu HotSpring

燕温泉河原の湯