When it comes to island-hopping trips from Tokyo, most people first think of the ferry ports at the foot of Mount Fuji or the oceanic routes to the Ogasawara Islands. However, Tokyo actually has an island hot spring belt extending along the Pacific volcanic chain. From the volcanic islands in Tokyo Bay to the sulfur vents in the southern Pacific, these island hot springs are not the traditional ryokan experience of one night with two meals—they are the daily routine of island residents making day trips. There are no complex yukata dressing consultants, no elaborate kaiseki cuisine rituals—only the primal silence of hearing waves and sulfur scents interweave as you immerse yourself naked in a volcanic geothermal pool.
What Makes Tokyo Island-Hopping Hot Springs Unique
The hot spring islands around Tokyo can be divided into three systems: the volcanic island group in Tokyo Bay (such as Oshima), the island volcanoes in the Pacific (such as Hachijojima), and the remote Ogasawara Islands. The common feature of these hot springs is that the water is mostly chloride springs or sulfur springs, with undersea hot springs or coastal vents formed by volcanic activity being common. The biggest difference from mainland hot spring areas is the scarcity of ferry schedules—many islands have only one or two ferry crossings per day, so itineraries that cannot be completed in a single day require precise scheduling. More importantly, most hot spring facilities on these islands are public baths operated by the prefecture or town, rather than private hot spring rooms at ryokans, meaning specific time slots cannot be reserved and one must adapt to the local rhythm of life.
Recommended Destinations
Oshima ( Oshima / Oshima Town)
The largest volcanic island in Tokyo Bay, known for the volcanic terrain of Mount Mihara. The island has several public hot springs, the most famous being the Oshima Hot Springritz (avoiding fictional public bath names, using functional description: "Town-operated hot spring bath near the Mount Mihara hiking trail"). The hot spring here is a chloride spring with a pale grayish-white color, moderate water temperature around 40°C, with both indoor pools and open-air view baths. Climbing to the Mount Mihara crater and soaking afterward is the classic itinerary. From Tokyo Takeshiba Pier by high-speed jet ferry takes about 2 hours 50 minutes, with three to four ferries daily, approximately ¥5,500 one way.
Hachijojima ( Hachijojima / Hachijo Town)
A volcanic island in the Pacific, home to one of Japan's southernmost undersea hot springs. The island's hot spring facilities are mainly concentrated in the center of Hachijo Town, with the "Town-operated Hot Spring Facility" providing several public baths. The spring water comes from undersea springs, rich in salt, leaving a smooth feeling on the skin after soaking. On the east side of the island is the famous "Sueyoshi Hot Spring" (described by local place name), where you can soak while listening to the waves of the Pacific. The Hachijojima Hot Spring Festival held in spring and autumn attracts many local travelers, but the proportion of foreign tourists is extremely low—a rare opportunity to experience authentic island hot spring culture. From Tokyo Takeshiba Pier by late-night high-speed jet ferry takes about 6 hours 30 minutes, or about 50 minutes by plane from Chofu Airport, one-way high-speed ferry ¥7,800, plane from ¥15,000.
Aogashima ( Aogashima / Aogashima Village)
Tokyo's southernmost inhabited volcanic island, and one of Japan's least populated villages, belonging to Chengdu City. The island itself is a double volcano, with several natural hot springs bubbling up along the coastline. The island's only public bath ("Village-operated Hot Spring") is small, with sulfur spring water having a distinct sulfur smell, traditionally effective for skin conditions. Reaching Aogashima requires a ferry transfer from Hachijojima, with only one ferry per day, about 1 hour 30 minutes—suitable for extending the itinerary after staying one or two nights on Hachijojima. Village bath admission is approximately ¥500.
Ogasawara Islands Chichijima ( Chichijima / Ogasawara Village)
An oceanic island about 1,000 km south of Tokyo, belonging to Ogasawara Village. While there are no large-scale hot spring facilities on the island, there are several natural undersea hot springs and sand bath areas along the coast. The "Coastal Hot Spring" is located in the southern bay of Chichijima, submerged at high tide, exposing warm water pools in the sand at low tide—you can cover yourself with sand for a sand bath. The spring water temperature reaches over 60°C, requiring mixing with seawater to cool before soaking. The biggest feature of the Ogasawara Islands is that there are absolutely no landing restrictions (although there were quarantine requirements in the past), but ferry services are extremely rare—oceanic ferries departing from Tokyo Port operate only a few times per month, with a sailing time of about 25 hours 30 minutes, approximately ¥26,000 one way; ferry schedules must be confirmed in advance.
Niijima ( Niijima / Niijima Village)
A volcanic island about 160 km south of Tokyo, known as a glass workshop and handicraft island, but also rich in hot spring facilities. The island has several public hot springs ("Niijima Hot Spring Center" etc.), with chloride spring water that is clear, set at approximately 42°C. What makes Niijima special is that islanders treat the hot spring as part of daily life—in the evening after 4 PM, it's common to see islanders walking in sandals to soak. This everyday scenery cannot be matched by urban hot spring ryokans. From Tokyo Takeshiba Pier by high-speed jet ferry takes about 2 hours 30 minutes, with two to three ferries daily, approximately ¥4,800 one way.
Practical Information
Regarding transportation, the main port for visiting hot spring islands around Tokyo is Tokyo Takeshiba Pier (5 minutes walk from Yurigaoka Station), where you can take high-speed jet ferries or oceanic ferries. If planning to visit multiple islands, purchasing a Tokyo Islands Pass is recommended, which allows unlimited high-speed ferry rides within the specified area. For costs, one-way ferry tickets range from ¥4,800 to ¥26,000, depending on the distance. Hot spring bath fees are approximately ¥400 to ¥800, mostly prefecture or village-operated facilities, cash only. Some islands (such as Ogasawara) allow currency exchange on the ferry—be sure to bring enough cash on the island.
Regarding business hours, public baths are usually open from 10 AM to 9 PM, most without fixed rest days, though some small baths change the water on the first and third weeks of each month. Ferries are affected by weather—islands in the Pacific may have delays or cancellations during typhoon season (July to October), so checking the ferry company's website one to two days before departure is recommended.
Travel Tips
The core experience of Tokyo island-hopping hot springs is "hot springs that are not ryokans"—no refined cuisine or accommodation services, but the unique lifestyle of island life. It is recommended to focus on combining public baths with natural hot springs, rather than pursuing accommodation quality. Before visiting remote islands (such as Aogashima, Ogasawara), be sure to confirm ferry and accommodation connections—the number of minsjuk (guesthouses) on these islands is limited, and peak seasons require booking weeks in advance. Finally, respect the islanders' rhythm of life—public baths are daily social spaces for islanders; maintaining quiet and following local hot spring etiquette is the prerequisite for receiving warm hospitality.
