SpringsAtlas

Japan · Kanto

Hot springs in Kusatsu

2Springs
55°CAvg temp
2Public baths
1Free entry
2Near train
78 hotels nearby35 dining options nearby3 convenience stores nearby26 attractions nearby
Kusatsu Onsen, KusatsuFREE

Kusatsu Onsen

Kusatsu · Kanto

95°CPublic Bath

One of Japan's most celebrated onsen towns, set at 1,200 meters in the mountains of Gunma Prefecture. The spring output here exceeds 32,000 liters per minute, making it the highest in Japan. The strongly acidic sulfur waters are legendary for their skin-healing properties. Twice a day in the town square, staff perform yumomi: cooling the scalding water with long wooden paddles while singing traditional songs.

Kusatsu onsen · 0 km

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Rosoku Onsen

Kusatsu · Kanto

14°CPublic Bath

A radium mineral spring resort in a forested valley near Nakatsugawa, Gifu Prefecture. The spring contains the highest natural radium content of any hot spring in Japan. The surrounding 80,000-square-meter forested site is organically cultivated. The name rosoku means candle in Japanese, a reference to the way radon gas rises silently and invisibly from the spring, like the unseen burning of a flame.

Kusatsu Hot Spring Bus Terminal. · 0.5 km

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Common questions

Frequently asked questions

Yes, Kusatsu has 1 free hot spring you can visit without an entrance fee. Check individual listings for current access details.

Hot springs in Kusatsu average around 55°C. Individual springs range from relaxing warm baths to intensely hot therapeutic pools — always check the temperature rating before entering.

From Tokyo, take the Hokuriku Shinkansen + Agatsuma Line to Naganohara-Kusatsuguchi (about 100 min). Bus to Kusatsu (~25 min). Total journey time is approximately 130 minutes.

Yes. Kusatsu has 2 public baths well-suited to first-time onsen visitors. Rinse thoroughly before entering, no swimming, and keep noise to a minimum.

Winter and spring. Ski slopes open December through March. is considered the ideal time to visit Kusatsu. Hot springs are a year-round attraction — winter visits are especially popular as the contrast between cold air and hot water creates a uniquely atmospheric soak.

About

About hot springs in Kusatsu

One of Japan's most famous onsen towns, with the highest natural spring output in the country. The traditional Yumomi water-cooling ritual is performed daily.