Yunokawa Onsen (湯の川温泉)

Yunokawa Onsen: A Historic Seaside Sanctuary in the Heart of Hakodate

Yunokawa Onsen is one of Hokkaido’s “Big Three” hot spring resorts, boasting a history that spans over 360 years. Situated uniquely on the southern coast of Hokkaido, it offers a rare combination of urban convenience and tranquil maritime beauty. Known as the “Inner Parlor of Hakodate,” this resort allows travelers to enjoy world-class seafood, stunning views of the Tsugaru Strait, and mineral-rich waters that once healed feudal lords and samurai warriors. Whether you are watching the “Isaribi” (squid fishing boat) lights flicker on the horizon or observing the famous snow monkeys soaking in thermal pools, Yunokawa offers an evocative experience of Japan’s northern heritage.

Key Information

The Healing Waters: Maritime Minerals and High Temperatures

The waters of Yunokawa gush forth at a daily volume of approximately 7,000 tons, with source temperatures often exceeding 100°C. Scientifically classified as sodium-calcium chloride springs, these waters are highly regarded for their “heat retention” properties. The salt content adheres to the skin, preventing the evaporation of sweat and keeping the body’s core temperature elevated long after bathing. This makes it a favored destination for those suffering from poor circulation or joint pain. Historically, the water was so potent that it was used as a primary medicinal treatment during the Edo period and the subsequent Hakodate War.

Top 5 Recommended Ryokans

• Chikuba Shinyotei (Traditional Heritage): A refined inn featuring a magnificent Zen garden and traditional Sukiya-style architecture. It is perfect for those seeking an authentic Japanese aesthetic.
• Yunokawa Prince Hotel Nagisatei (Ocean View): Famous for having a record number of rooms with private open-air baths overlooking the Tsugaru Strait.
• Bourou Noguchi Hakodate (Modern Luxury): An ultra-modern designer ryokan offering spacious suites and a rooftop infinity onsen with panoramic city views.
• Wakamatsu Hot Spring Resort (Michelin Recognized): A historic establishment that once hosted the Imperial family, known for its exquisite kaiseki cuisine and one-star Michelin status.
• Umi to Akari Hewitt Resort (Modern/Casual): A newer facility featuring a stunning rooftop “infinity bath” that blends seamlessly with the ocean horizon.

Must-Visit Public Baths (Soto-yu)

While most bathing takes place within hotels, the Yumeguri Butai is a must-visit free public footbath located right next to the Yunokawa-onsen tram stop. It allows travelers to rest their weary feet in the same mineral-rich water found in high-end ryokans. For a truly unique experience, visit the Hakodate Tropical Botanical Garden, where from December to May, you can watch nearly 100 Japanese macaques (Snow Monkeys) relaxing in their own dedicated hot spring pool.

Walking Guide & Scenic Spots

Start your walk at Yukura Shrine, the spiritual birthplace of the onsen town where the first spring source was discovered. From there, head toward the coast to walk the Yunokawa Beach Promenade, especially beautiful at sunset when the squid fishing boats begin to glow on the sea. For garden lovers, Kosetsuen Garden (Miharashi Park) is a short taxi ride away; it is the only government-designated cultural property garden in Hokkaido and is spectacular during the autumn foliage season.

Local Gastronomy & Souvenirs

As a major fishing port, Hakodate’s seafood is legendary. Try the Live Squid Sashimi (Ika Sashi), which is the city’s culinary icon. For souvenirs, the Hakodate Snaffle’s Cheese Omelette is a melt-in-your-mouth cheesecake that has become a national favorite. Don’t forget to look for Ganso Yamaoyaji (butter milk crackers) and local Kelp (Konbu) products, which are harvested directly from the surrounding cold waters.

Cultural & Historical Context

The name Yunokawa is derived from the Ainu words yu (hot water) and petsu (river). Legend states that in 1653, the young lord Takahiro of the Matsumae Clan was cured of a life-threatening illness after his mother received a divine dream instructing her to take him to these springs. Later, in 1869, the samurai leader Takeaki Enomoto used these waters to heal wounded soldiers during the final stages of the Boshin War, leaving a legacy of martial history in the town.

Practical Travel Tips

Transportation: The Hakodate City Tram is the most atmospheric way to arrive, connecting the onsen district directly to Goryokaku Fort and the Morning Market. Cash: While major hotels are card-friendly, the local seafood stalls and small ramen shops in the area often prefer Japanese Yen. Tattoos: Many of the modern hotels (like Nagisatei) offer rooms with private baths, which is the easiest way for guests with large tattoos to enjoy the water without restriction.

2025-2026 Latest Updates

The Yunokawa Winter Lights event will run from November 29, 2025, to March 31, 2026, illuminating the town and the footbath area with golden LED displays. Additionally, the Hakodate Winter Fireworks are scheduled for every Friday and Saturday in February 2026, launched from the nearby port area to create a stunning backdrop for nighttime soaks.

Safety & Manners

When using the seaside open-air baths, be mindful that the sea breeze can be quite cold; always keep your body submerged to avoid chills. In the communal baths, respect the local tradition of “Kakeyu” (rinsing before entry) to maintain the purity of the shared water. Please do not feed the monkeys at the botanical garden, as it is strictly regulated for their health.