Sunayu (Hokkaido)


Free bathing 24 hours per day!
Swimsuits used for mixed-bathing
Phone : 01548-2-2191
Address :
Maps : Mapfan - Google

Number of baths









Spring information

Main spring : 77°C pH=6.7

Onsen in Hokkaido

Ashi yu (Kawayu Onsen)
Hotel New yu no kaku (Kawayu Onsen)
Onneto yu no taki (Onneto)
Tennen yukoro onsen (Niseko Hirafu)
Yamada onsen hotel (Niseko Hirafu)
Daiichi (Yoroshi Onsen)
Karamatsu no yu (Yoroshi Onsen)
Kotan (Lake Kussharo)
Sunayu (Lake Kussharo)
Wakoto Onsen (Lake Kussharo)
Sandan no yu - Takimi no yu (Iwaobetsu Onsen)
Kuma no yu (Rausu)

Other links
Small page in Japanese with information how to dig your own bath

Mini-bath on the lake shore


(explanation on symbols)

Ratings   (explanation of our rating system)

Global rating :   
This onsen is quite impressive, as the hot water is directly surfacing on a beach! But this is the only interesting aspect of the onsen, as the place itself is unappealing, with a large parking for the cars and multiple shops and restaurants next to the beach. Here, holes are available to bath in, but if you are patient and have time, you also can dig your own onsen!

Size :  
Baths usually host just one person. If you really have a lot of time, you probably could dig a small swimming pool.

View :      
Looking toward the lake, you will have a beautiful view on the water and the mountains behind it. However, should you turn your head, you most probably won't find the view interesting, expect if you are searching an omiyage or some food...

Modesty :      
With a couple of hundreds people around you all the time, everybody is wearing a swimming suit here.

Area :     
Lake Kussharo is a beautiful caldera lake located in Akan National Park. With a circumference of 57 kilometers (maximum depth of 118 meters), it is the 5th largest lake in Japan. The Wakoto peninsula is one of the nicest place around the lake, with one free rotenburo). Boat, canoes and kayaks can be rented, and are popular in summer. In winter, the lake might freeze. Close to Lake Kussharo, the town of Kawayu Onsen is a typical uninspiring japanese onsen town, which lacks the beautiful view of the nearby lake. Mt. Iou can easily be reached, and is an active 500 meters high volcano, where acid smokes and solid sulfur can be observed. Finally, the most attractive place of the area is probably Lake Mashu, a beautiful and mysterious lake with a tiny island, where Ainu gods were supposed to live; This island rises 230 meters from the bottom of the lake. The shore of the lake is kept completely wild, and only three observatory points are available. Be aware that most of the days, the lake can be hidden from the viewers by a very dense fog.


This place, which provides a huge parking for cars, can get really crowded