Capybara Hot Springs in Japan: Where to Watch Them Soak

What Is Capybara Onsen?

How It All Started at Izu Shaboten Zoo

Capybara onsen (カピバラ温泉) is a winter tradition at several Japanese zoos where capybaras are given access to heated outdoor baths — and they love it. According to the Izu Shaboten Zoo official site, the tradition began in 1982 when a zookeeper at Izu Shaboten Zoo was cleaning the capybara enclosure with warm water and noticed the animals gathering in the puddles. The zoo started offering heated baths, and the capybaras took to them immediately.

The sight of capybaras soaking contentedly in steaming water — eyes half-closed, sometimes with citrus fruit floating around them — has become one of Japan's most beloved winter animal scenes. It went viral internationally and now draws visitors from around the world specifically during the bathing season.

Why Capybaras Love Hot Water

Capybaras are semi-aquatic rodents native to South America. In the wild, they spend much of their time in warm rivers and wetlands. Japan's winter temperatures are colder than their natural habitat, so the heated baths replicate the warm water they instinctively seek. The behavior is genuine — the capybaras choose to enter the baths and stay as long as they want.

The Japanese word iyashi (癒し, healing/relaxation) perfectly describes the experience of watching them. There is something deeply calming about seeing an animal that weighs 50 kg sink into hot water with a visible expression of contentment.

Where to See Capybara Hot Springs in Japan

Izu Shaboten Zoo, Shizuoka (The Original)

Izu Shaboten Zoo (伊豆シャボテン動物公園) in Ito City, Shizuoka Prefecture, is the birthplace of capybara onsen and remains the most famous location. According to the official site, admission is ¥3,200 (~$21) for adults and ¥1,600 (~$11) for children. Hours are 9:00-17:00 (March-October) and 9:00-16:00 (November-February). The zoo is open year-round.

The capybara bathing area (Capybara Village, カピバラの里) allows visitors to watch the capybaras soak from a close viewing area. Between bath sessions, you can feed the free-roaming capybaras with grass bundles (¥100 per bundle). For the full zoo experience, see our complete Izu Shaboten Zoo visitor guide.

Saitama Children's Zoo, Saitama

Saitama Children's Zoo (埼玉県こども動物自然公園) offers capybara onsen during winter at a fraction of the Izu Shaboten price. According to the official site, admission is just ¥510 (~$3.40) for adults and ¥210 (~$1.40) for children. The zoo is about 50 minutes from Tokyo by Tobu Railway.

The capybara onsen here is smaller in scale than Izu Shaboten but significantly cheaper and more accessible from central Tokyo. A good option for budget-conscious visitors or families with young children.

Nagasaki Bio Park, Nagasaki

Nagasaki Bio Park on Kyushu has one of the world's largest capybara groups and offers capybara onsen during winter. The park is about 40 minutes by bus from Nagasaki Station. This is the best capybara onsen option for travelers exploring Kyushu rather than the Tokyo area.

For a complete comparison of all capybara onsen locations across Japan, see our full guide to capybara onsen locations.

When to Visit: Capybara Onsen Season

Monthly Calendar and Special Baths

According to the Izu Shaboten Zoo capybara onsen page, the capybara bathing season runs from late November through early April. Bathing sessions are scheduled at specific times during the day — typically mornings and afternoons. Arrive 15-30 minutes early on weekends for the best viewing positions.

Mikan Bath and Other Fruit Bath Events

Special event baths are held on weekends and holidays during the season. The most popular is the mikan bath (みかん風呂) — capybaras soaking with floating mandarin oranges. The capybaras sometimes eat the fruit while bathing, which produces some of the most photographed moments. Apple baths and yuzu baths also appear on the calendar.

These special baths echo the Japanese tradition of yuzu-yu — bathing with yuzu citrus on the winter solstice for good health. The cross-cultural parallel between capybara onsen and human onsen culture is part of what makes the experience feel distinctly Japanese.

Planning Your Capybara Onsen Trip

Getting to Izu Shaboten Zoo from Tokyo

From Tokyo, take the JR Odoriko or Saphir Odoriko limited express to Ito Station on the Izu Peninsula (approximately 2-2.5 hours). From Ito Station, a local bus reaches the zoo in about 35 minutes. The zoo has free parking for approximately 1,000 vehicles.

A day trip from Tokyo is feasible but long. Many visitors combine the capybara visit with an overnight stay in the Izu onsen area to make the most of the journey.

Combining Capybara Onsen with Other Izu Attractions

Izu Shaboten Zoo is on the eastern side of the Izu Peninsula, near several other attractions:

• Omuroyama — a volcanic cone with a chairlift offering 360-degree views
• Jogasaki Coast — dramatic coastal cliffs with walking trails
• Ito Onsen — hot spring town for your own bathing experience after watching the capybaras

A 2-day Izu trip covering the zoo, coastal scenery, and an onsen ryokan stay is the most rewarding way to experience capybara onsen without rushing.

Tips for the Best Capybara Bathing Experience

• Check bath times at the entrance. Sessions are scheduled, not continuous. You cannot see capybaras bathing outside scheduled times.
• Weekdays are quieter. Weekend crowds can make the viewing area congested. Weekday mornings offer the most relaxed experience.
• Bring ¥100 coins for feeding. Grass bundles cost ¥100 each, and feeding the capybaras between bath sessions produces excellent close-up photos.
• The zoo is more than capybaras. Izu Shaboten Zoo has 1,500+ cactus species and 140 animal species. Budget 3-4 hours for the full visit.
• Dress warmly. You will be outdoors watching the capybaras soak while you are not soaking. Winter temperatures on the Izu coast are milder than Tokyo but still cold.

Frequently Asked Questions

When is capybara onsen season in Japan?

Late November to early April at most locations. Sessions are scheduled at specific times during the day — check zoo websites for exact schedules. Weekends and holidays often feature special fruit baths (mikan oranges, apples, yuzu) that are particularly photogenic.

How much does it cost to see capybara hot springs?

Izu Shaboten Zoo: ¥3,200 (~$21) adults, ¥1,600 (~$11) children. Saitama Children's Zoo: ¥510 (~$3.40) adults, ¥210 (~$1.40) children. Capybara onsen viewing is included in general admission at all locations — no additional fee for the bathing viewing.

Can I visit multiple capybara onsen locations in one trip?

Izu Shaboten Zoo and Saitama Children's Zoo are both accessible as day trips from Tokyo, though Izu Shaboten requires 2-2.5 hours of train travel each way. Visiting both in one trip is possible with 2-3 days. Nagasaki Bio Park requires a separate trip to Kyushu.

Do I need to time my visit to see the bathing?

Yes. Capybara onsen sessions happen at scheduled times, not continuously. Check the times posted at the zoo entrance and arrive 15-30 minutes early on weekends for the best viewing positions. Between sessions, you can feed and interact with the capybaras in their regular enclosure.

Is Izu Shaboten Zoo worth visiting just for the capybaras?

The zoo is a full-day attraction with 1,500+ cactus species, 140 animal species, and a boat ride through animal islands — not just capybaras. Most visitors spend 3-4 hours. The capybara onsen is the star draw during winter, but the zoo offers enough to justify the trip year-round.