Noboribetsu Jigokudani

Noboribetsu

Year-round

Hell Valley, 9 mineral types

Sulfur, Iron

Jozankei Onsen

Sapporo

Year-round

30 min from Sapporo, canyon

Sodium Chloride

Lake Toyako Onsen

Toyako

Year-round

Lakeside, Mount Yotei views

Sulfate

Shikotsuko Onsen

Chitose

Year-round

Volcanic caldera lake

Simple Thermal

Niseko Village Onsen

Niseko

Dec–Mar

Rotenburo under snow

Sodium Chloride

Kawayu Onsen

Shiretoko

Jun–Sep

Remote alpine, river baths

Sulfur

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