
Kotan Onsen Lake Kussharo
Soak in a free, natural hot spring on the shores of Lake Kussharo, Hokkaido, often surrounded by graceful swans.

Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Best swan viewing

Kotan Onsen Lake Kussharo
Best Time
Best swan viewing

Highlights
Must-see attractions
Soak in a free, natural hot spring on the shores of Lake Kussharo, Hokkaido, often surrounded by graceful swans.
"This free public onsen offers an extraordinary lake shore view. I was so amazed by the view!"

swimwear is optional :bikini:
While swimwear is allowed, many visitors opt to go nude for a more traditional onsen experience.
Check cleaning schedule :broom:
The onsen is maintained by a local gentleman and may be closed for cleaning. Plan accordingly!

Highlights
Discover the most iconic attractions and experiences

The Free Open-Air Onsen
Lake Kussharo Shore
Soak in naturally heated waters with stunning lake views. A truly unique and rejuvenating experience.

Swan Congregation
Lake Kussharo Shore
Witness numerous swans gathering in the unfrozen waters, creating a picturesque and lively scene.

Lake Kussharo Views
Lake Kussharo Shore
Enjoy panoramic vistas of the vast, caldera lake, especially beautiful during sunrise or sunset.
Plans like a pro.
Thinks like you
Planning Your Visit
Embrace the Free Dip
Timing is Key for Swans & Solitude
Best Times
Insider Tips
from TikTok, Instagram & Reddit
swimwear is optional :bikini:
While swimwear is allowed, many visitors opt to go nude for a more traditional onsen experience.
Check cleaning schedule :broom:
The onsen is maintained by a local gentleman and may be closed for cleaning. Plan accordingly!
Bring your own towel :towel:
Towels are not provided, so remember to bring one for after your soak.
Jump in the lake! :wave:
After warming up in the onsen, take a refreshing dip in the cold lake waters.
Tips
from all over the internet
swimwear is optional :bikini:
While swimwear is allowed, many visitors opt to go nude for a more traditional onsen experience.
Check cleaning schedule :broom:
The onsen is maintained by a local gentleman and may be closed for cleaning. Plan accordingly!
Bring your own towel :towel:
Towels are not provided, so remember to bring one for after your soak.
Jump in the lake! :wave:
After warming up in the onsen, take a refreshing dip in the cold lake waters.
Respect the space :pray:
This is a free, public facility. Be mindful of others and keep the area clean.
What Travellers Say
Reviews Summary
Visitors rave about the stunning lake views and the unique experience of soaking in a free, open-air onsen. The opportunity to see swans congregating in the unfrozen waters is a major draw, especially in winter. While basic, the nearby changing facilities and toilet are appreciated. Some note the proximity to residential homes as a minor detraction from total wilderness.
"Beautiful onsen, lake access, Well maintained by a friendly gentleman. Changing facilities and toilet available nearby."
Otto Hughes
"I used this onsen in the middle of May on a weekday. This public onsen is free, and the view is amazing. Fortunately, only a few people used this onsen at that time. It allows you to wear the swimsuit. After the bath, I recommend jumping into the lake, which was so cold. I loved this place so much."
Gabor Bicserdy
"It has amazing views of Lake Kussharo. The only flaw is that it's not in a total wilderness. You see some residential homes on the other side. But it's worth checking it out. The admission is free."
Ritsuko Andrews
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Kotan Onsen is located on the eastern shore of Lake Kussharo in Akan National Park, Hokkaido. The easiest way to reach it is by car, with ample parking available. Public transport options are limited; you might need to take a bus to a nearby town and then a taxi or arrange a local transfer.
Public transport to Kotan Onsen is challenging. Buses typically run to nearby towns like Teshikaga. From there, you'll likely need a taxi or a pre-arranged shuttle. Renting a car is highly recommended for easier access.
Renting a car offers the most flexibility to explore Lake Kussharo and its surroundings, including Kotan Onsen. This allows you to stop at various viewpoints and easily access the onsen.
Yes, there are guesthouses and small inns in the vicinity of Lake Kussharo and the nearby town of Teshikaga. Booking in advance is advisable, especially during peak seasons.
While possible, it's a long day trip from cities like Sapporo. It's best enjoyed as part of a longer itinerary exploring Eastern Hokkaido to fully appreciate the area.
🎫 🎫 Tickets & Entry
Kotan Onsen is a free public hot spring. There are no admission fees, making it an accessible and budget-friendly experience.
No booking is required as it's a free, open-air facility. You can visit anytime during its operational hours, though it's best to check if it's open on the day of your visit due to cleaning.
There are no fixed official opening hours as it's a natural hot spring. However, it's generally accessible during daylight hours. It's advisable to visit during the day to enjoy the views and potentially see the swans.
Kotan Onsen is generally open year-round, but it can be closed for cleaning by the local caretaker. Winter is a popular time due to the swans.
The main restriction is that the onsen may be temporarily closed for cleaning. Otherwise, it's open to all visitors.
🎫 🏞️ Onsite Experience
Basic facilities like a changing area and a toilet are available nearby. There are no showers or lockers, so come prepared.
Yes, swimwear is permitted at Kotan Onsen, though many visitors choose to bathe nude for a more traditional experience.
Definitely bring a towel! You might also want water shoes for the lake, and a small bag for your belongings.
It can be, but parents should be aware that nudity is common. The lake access might also require supervision for young children.
The water temperature is naturally heated and generally comfortable for soaking, though it can vary slightly.
📸 📸 Photography
The entire setting is photogenic! Capture the onsen with Lake Kussharo in the background, the swans, and the surrounding natural beauty. Golden hour offers stunning light.
Be respectful of other bathers' privacy. It's best to focus on the landscape and avoid photographing individuals without their explicit consent.
A smartphone is perfectly adequate for capturing the experience. If you have a waterproof camera or a phone case, it can be useful for shots near the water.
There are no official restrictions, but common courtesy and respect for privacy should be observed.
Sunrise and sunset offer beautiful lighting for landscape shots. Midday can be good for capturing the swans in bright light.
For Different Travelers
Tailored advice for your travel style
👨👩👧 Families with Kids
Consider visiting during daylight hours when the onsen is less likely to be crowded. Bringing a towel is essential, and having a plan for changing discreetly will make the experience smoother. The free admission is a definite plus for budget-conscious families.
💰 Budget Travelers
To save on transportation, consider visiting as part of a road trip where you've rented a car. If relying on public transport, factor in the cost of buses and potential taxis. The minimal facilities mean you won't be tempted by expensive spa treatments or services.
📸 Photography Enthusiasts
The presence of swans, particularly in winter, adds a dynamic element to your shots. Experiment with different angles to showcase the unique setting. Remember to be respectful of other visitors' privacy when taking photos.
Deep Dives
In-depth insights and expert knowledge
The Magic of Free Onsen Culture
This free public onsen provides an extraordinary lake shore view. It's a place where you can truly relax and connect with nature. The fact that it's free is a significant draw, allowing everyone to enjoy this natural wonder. Remember that it might be closed for cleaning, so a quick check or flexibility in your plans is wise.
The experience is enhanced by the surrounding natural beauty of Akan National Park. The volcanic origins of the area contribute to the hot springs, and the lake itself is a caldera lake, adding to the dramatic landscape. It's a simple yet profound experience that many travelers find deeply rewarding.
Swans and Unfrozen Waters: A Winter Wonder
Witnessing the swans congregating here is a highlight for many visitors, especially during winter. It offers fantastic opportunities for birdwatching and photography. The contrast of the white swans against the steaming onsen and the vast lake is a truly memorable sight.
If you're planning a visit specifically for the swans, aim for the colder months. Early mornings are often best for observing them as they gather. The sight of these graceful birds in such a serene, natural hot spring setting is a testament to the unique ecological balance of the area.
Navigating Your Visit: Practicalities and Etiquette
It's crucial to bring your own towel, as none are provided. Some visitors also recommend water shoes for navigating the lakebed after your soak. The onsen is maintained by a local gentleman, and it's important to be respectful of his efforts and the cleanliness of the area.
After enjoying the warm waters, many visitors take a refreshing plunge into the cold waters of Lake Kussharo. This contrast is invigorating and a popular part of the experience. Remember to be mindful of the environment and leave no trace behind.





Social
from TikTok, Instagram & Reddit