Hokkaido is not just Japan's northernmost island. It is a place that gets under your skin.
I first visited in February, and I was not prepared for it. The flight from Manila to New Chitose was fine. The snowstorm that greeted me at the airport was not. By the time I reached the onsen town that evening, the road signs were buried, the wind was cutting through everything I was wearing, and I was genuinely questioning my life choices.
Then I found the outdoor bath.
I slipped into the hot water, the sulfur steam rising all around me, snowflakes landing silently on my shoulders, and the cold air sharp on my face. Everything else disappeared. My tired legs, my sore back, the long journey from Manila. All of it just melted away.
That was the moment I understood why people travel to Hokkaido specifically in winter. Not despite the cold. Because of it.
Hokkaido sits on top of one of the most geologically active zones in the world. Volcanic peaks, caldera lakes, steaming valleys. The island produces more than 250 distinct hot spring sources, and each one has its own mineral character, its own temperature, its own personality.
Unlike the polished resort towns you find in Honshu, many of Hokkaido's onsen districts still feel a little raw and frontier-like. A lot of them were developed during the Meiji era, when Japan was trying to attract settlers to the island. That sense of remoteness, that feeling of being somewhere genuinely far from the city, never fully left.
I love that about it.
If someone asked me where to begin a Hokkaido onsen journey, I would say Noboribetsu without hesitating.
The town sits at the edge of Jigoku-dani, which translates as Hell Valley. The name is accurate. Volcanic craters vent clouds of hydrogen sulfide gas, and the ground is stained vivid ochre and white from centuries of mineral deposits. Nine distinct spring types rise from beneath the valley floor, which gives Noboribetsu a mineral variety you simply cannot find anywhere else in Japan.
The flagship bathhouse, Dai-ichi Takimotokan, channels water from all nine sources into 35 pools spread across multiple floors. The experience has a beautiful rhythm to it. You move from warm stone-lined indoor halls through sliding doors into the outdoor rotenburo, where steam rises against a backdrop of forest and volcanic rock.
You can visit for the day without staying overnight. I recommend booking ahead in winter, because domestic tourists pack the place on weekends.
Before or after your soak, walk the Jigoku-dani path. It takes about 20 minutes to complete the circuit. Steam vents right beside you. Mud pools bubble audibly. The sulfur smell is overwhelming at first, and then something shifts and it starts to feel like exactly where you are supposed to be.
Just 40 minutes by bus from central Sapporo, the Jozankei valley feels like a secret the city keeps for itself.
The setting is classically Japanese. A wooded river gorge, stone bridges, the Toyohira River running cold and clear below. There are riverside foot baths that anyone can use for free, which I find a wonderful gesture. No fee, no booking. Just take off your shoes and sit for a while.
In autumn, the maple trees turn the valley walls into something extraordinary. Red and gold, as far as you can see. Many visitors time their Hokkaido trip around the foliage, and honestly, I understand why.
The sodium chloride waters here are gentler than Noboribetsu's volcanic springs. Clear, slightly salty, wonderfully soft on the skin. The large resort hotels offer day-bath entry, and several have outdoor pools looking directly out over the river. It is a more polished experience. Quieter, more refined.
Both, if you can manage it.
But if you have to choose, here is how I think about it. Noboribetsu gives you greater spring variety, more dramatic volcanic scenery, and a real onsen-town atmosphere where everything revolves around the baths. Jozankei gives you easier access from Sapporo, the best autumn foliage in Hokkaido, and beautifully appointed resort hotels.
Budget travellers will find more day-bath options at different price points in Noboribetsu. Jozankei skews toward larger, more luxurious properties.
If your schedule allows, one night in each, Noboribetsu for the volcanic drama and Jozankei for the river forest setting, makes for a near-perfect Hokkaido onsen trip.
I am a designer, not a chemist. But I have soaked in enough different springs across Japan to trust what I feel in my own body.
The sodium bicarbonate waters at Jozankei leave your skin noticeably softer after about 20 minutes. Japanese bathing culture has a name for this. They call it bijin-no-yu, which means "beautiful-skin water." After my first soak there, I kept touching my arm on the bus ride back because I could not believe how smooth it felt.
Noboribetsu's sulfur springs work differently. They have a warming quality that goes deeper than the heat alone. After my first sulfur bath there, my shoulders, which is where I carry all my tension, felt genuinely loose for two full days. My husband Ryan noticed before I did.
Different mineral compositions produce different effects on the body. Hokkaido's geological variety means you can experience several of them in a single trip. That is a remarkable thing, if you think about it.
Hokkaido is best reached through New Chitose Airport, which connects to JR Sapporo Station in about 40 minutes by the rapid airport train.
From Sapporo, you have two directions to go.
For Noboribetsu, take the JR Muroran Main Line to Noboribetsu Station. The journey takes 50 to 70 minutes. From the station, the Donan Bus runs to Noboribetsu Onsen in about 20 minutes. Buses run roughly once an hour, so check the schedule before you arrive.
For Jozankei, take the Hokkaido Chuo Bus directly from Sapporo's Odori Station. The ride is about 55 minutes. There is no train connection to Jozankei, so the bus is your only option.
A JR Hokkaido pass covers the rail portion of the Noboribetsu journey and pays for itself quickly if you are doing multiple trips across the island.
The onsen season in Hokkaido runs year-round, but the experience changes significantly with the season.
Winter, from December through February, is when the outdoor baths are at their most magical. Midweek visits in January or February are often surprisingly quiet. Weekends fill fast with domestic visitors who have the same idea as you.
Spring brings fresh green leaves and cool air that makes the heat of the bath feel even better. Autumn, from late October through mid-November, is the most visually spectacular time to visit. Summer is the least dramatic for outdoor bathing, since the contrast between the hot water and the air nearly disappears. Higher-altitude baths are still enjoyable.
Tattoo policies vary by facility. Dai-ichi Takimotokan prohibits tattoos in the shared baths, which is common at larger resort facilities. Smaller, family-run onsen are often more flexible. If this matters to you, call ahead or check the listing page before you go.
Day-bath entry at major Noboribetsu facilities typically runs between 1,000 and 2,500 yen, which is roughly 7 to 17 US dollars. Jozankei resort hotels charge a little more, around 1,500 to 3,000 yen for day use.
Pack a small tenugui towel if you have one. It is thin cotton, dries quickly, and is exactly the right tool for carrying between pools. Most facilities also rent towels if you do not have your own.
Hokkaido changed the way I think about travel. Sometimes the point is not to see something. Sometimes the point is to feel something. A hot spring in the middle of a snowstorm, steam rising into cold dark air, is about as close to that feeling as I know how to get.
Ria Flores is an interior designer, Chief Design Officer, and frequent Japan traveller who has soaked in hot springs across Hokkaido, Tohoku, Kyushu, and Kansai. She writes about onsen culture from a traveller's perspective — practical, personal, and grounded in first-hand experience. She is the wife of SpringsAtlas founder Ryan Flores.
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