Chapter 1 : Executive Summary: From "Viewing" to "Immersing" in Sea Views
Chapter 2 : Kanto & Izu Peninsula Area: Superb Resorts Accessible from Tokyo
Chapter 3 : Kansai & Kinki Area: The Sea Dyed by the Sunset
Chapter 4 : Hokuriku & San'in Area: The Power and Healing of the Sea of Japan
Part 3 : This article
Chapter 5 : Hokkaido & Tohoku Area: Unity with Great Nature
Chapter 6 : Kyushu Area: The True Strength of the Hot Spring Kingdom
Chapter 7 : Shikoku & Okinawa Area: Feeling the Roundness of the Earth
Chapter 8 : Smart Usage
Chapter 9 : Conclusion: Find the "Sea" That Suits You Best
Chapter 5 : Hokkaido & Tohoku Area: Unity with Great Nature
Hot springs in the northern country offer the best contrast between the cold outside air and the warm water.
5.1. Aomori Prefecture/Koganezaki Furofushi Onsen: Seaside Open-Air Bath
- The gourd-shaped open-air bath at the water's edge is very famous. It features brownish-red water containing iron. Day-trip bathing ends around 16:00 (check the reception end time), so bathing while watching the sunset sinking into the Sea of Japan is a privilege reserved for overnight guests.
5.2. Diverse Waterfronts in Hokkaido
- Hakodate Yunokawa Onsen: At new hotels like "Umi to Akari / Hewitt Resort," you can gaze at the Tsugaru Strait and fishing fires from the rooftop infinity bath.
- Shakotan Peninsula Misaki no Yu Shakotan: A scenic hot spring overlooking the Shakotan Blue sea, but please do not forget to check the latest information before visiting as it may be closed during the winter season (December to March).
5.3. Miyagi Prefecture/Minami Sanriku Hotel Kanyo: Reconstruction and Sunrise
- The open-air bath protruding into the Pacific Ocean offers a sense of presence where seagulls fly nearby. Day-trip bathing is affordable at 1,000 yen for adults, allowing you to feel the energy of the reconstructed town while looking at the sea.
Chapter 6 : Kyushu Area: The True Strength of the Hot Spring Kingdom
Kyushu has a rich variety, including Beppu with the largest spring water output in Japan and Ibusuki full of tropical emotion.
6.1. Beppu Onsen: Entertainment or Silence?
Kyushu has a rich variety, including Beppu with the largest spring water output in Japan and Ibusuki full of tropical emotion.
Suginoi Hotel (Beppu)
- Tanayu: A large panoramic open-air bath where five tiers of bathtubs spread out like terraced rice fields on a hill overlooking Beppu Bay. It has an overwhelming sense of openness and is great for families and groups. Day-trip rates start from 2,000 yen on weekdays.
AMANE RESORT SEIKAI
- Shiosai no Yu: This is a quiet adult hot spring enjoyed at sea level 0m, the same eye level as the sea surface. Day-trip use is limited to "bathing only (2,500 yen)" or "plan with lunch." Since the bathing fee becomes a bargain (1,000 yen) with lunch use, the set with a meal is definitely recommended.
6.2. Ibusuki Onsen (Kagoshima Prefecture): Overlooking Satsuma Fuji
- Healthy Land Open-Air Bath "Tamatebako Onsen": A super popular spot that has repeatedly won 1st place in "Day Trip Hot Springs You Are Glad You Went To." The spectacular view overlooking Mt. Kaimon (Satsuma Fuji) and the East China Sea without obstruction is worth visiting at least once. It underwent major renovations and reopened in the fall of 2025, so the facilities are clean.
Chapter 1 : Executive Summary: From "Viewing" to "Immersing" in Sea Views
Chapter 2 : Kanto & Izu Peninsula Area: Superb Resorts Accessible from Tokyo
Chapter 3 : Kansai & Kinki Area: The Sea Dyed by the Sunset
Chapter 4 : Hokuriku & San'in Area: The Power and Healing of the Sea of Japan
Part 3 : This article
Chapter 5 : Hokkaido & Tohoku Area: Unity with Great Nature
Chapter 6 : Kyushu Area: The True Strength of the Hot Spring Kingdom
Chapter 7 : Shikoku & Okinawa Area: Feeling the Roundness of the Earth
Chapter 8 : Smart Usage
Chapter 9 : Conclusion: Find the "Sea" That Suits You Best
