What is Oumijima?
Oumijima (pronounced "Oumi-jima") is an island in Nagato City, Yamaguchi Prefecture, known for its outstanding natural beauty. Its unique terrain has earned it the nickname "the Alps on the Sea."
The island's intricate coastline stretches about 16 km and is made up of cliffs, caves, and unusual rock formations carved by powerful waves, offering visitors overwhelmingly dramatic scenery.
Oumijima is one of Japan's representative scenic spots, where you can enjoy its natural beauty up close by sightseeing boats and hiking trails.
Highlights of Oumijima
1. Spectacular coastline views
Oumijima's coastline is characterized by a dynamic landscape of sheer cliffs, caves, and unusual rock formations.
In particular, the views from the Oumijima sightseeing boat are breathtaking, and tours that approach the inside of the caves are very popular.
2. Mysterious scenery of caves and rock formations
The island is home to caves and rock formations such as Kannon Cave (Meoto Cave), Kogane Cave, and the Large and Small Gates (Daimon and Komon).
These natural sculptures were formed over thousands of years by wind and waves.
Visitors are captivated by their distinctive shapes and beauty.
3. Enjoy nature on the hiking trails
Oumijima has well-maintained hiking trails where you can enjoy the coastline views and rich nature as you walk.
There are also observation points along the routes.
The contrast between the rugged cliffs facing the Sea of Japan and the calm inner bays of Fukagawa Bay and Senzaki Bay is particularly striking.
4. Popular diving spot
The waters around Oumijima are clear and home to abundant marine life, making the area popular for diving and snorkeling.
Many divers visit in the summer to enjoy the beautiful underwater world.
5. Natural beauty through the seasons
Oumijima shows different charms in each season.
- Spring: Fresh greenery and pleasant breezes.
- Summer: Bright blue skies and emerald-green seas.
- Autumn: Mild weather with especially beautiful sunsets.
- Winter: Snow-dusted cliffs create a magical scene.
Access
By car
- About 1.5 hours from Yamaguchi City
- Take the Chugoku Expressway to Mine IC and follow signs toward Oumijima. There are several free parking lots on the island.
- About 2.5 hours from Fukuoka City
- Take the Kyushu Expressway and Chugoku Expressway toward Nagato City.
By public transportation
- From JR San'in Main Line "Nagato-shi Station"
- About 20 minutes by bus or taxi.
- Oumijima Sightseeing Boat Terminal
- From Nagato-shi Station, take a bus and get off at the Oumijima Sightseeing Boat Terminal—it's right there.
Things to do on Oumijima
1. Take the Oumijima sightseeing boat
Board a sightseeing boat to observe Oumijima's cliffs and caves up close.
The roughly 60-minute cruise offers views you usually can't see from land.
2. Hike the trails
Walking the hiking courses to explore the island's nature and viewpoints is highly recommended.
There are many scenic spots along the way that are perfect for photos.
3. Enjoy sea activities
In summer, diving and snorkeling let you explore Oumijima's beautiful underwater world.
Many activities require advance reservations, so plan ahead.
4. Enjoy local cuisine
The area around Oumijima offers dishes made with fresh seafood.
Local favorites include dishes featuring horse mackerel (aji) and turban shell (sazae).
Useful information for travelers
- Opening hours
- Sightseeing boats typically operate from 9:00 to 16:00 (hours may vary by season or weather).
- Hiking trails are open 24 hours.
- Admission fees
- Walking around the island is free. Sightseeing boat fares: Adults ¥2,800 / Children ¥1,400 (as of 2024).
- Recommended clothing
- Wear comfortable shoes and dress appropriately for the season.
- Bring a hat and sunscreen in summer, and warm clothing in winter.
- Notes / Precautions
- Boat operations may be cancelled due to weather.
- Some cliff-side paths can be unstable—watch your footing.
Summary
Oumijima is one of Yamaguchi Prefecture's top tourist spots, captivating visitors with its overwhelming scale and natural beauty.
The spectacular views from the sightseeing boats and hiking trails, along with the variety of sea activities, will surely become special travel memories.
If you visit Yamaguchi, be sure to experience Oumijima's majestic nature!
Frequently Asked Questions
Q1. When is the best time to visit Oumijima?
Spring and autumn offer pleasant weather for hiking and boat tours. Summer is especially recommended for diving and snorkeling.
Q2. Do I need to reserve the sightseeing boat?
Generally no reservation is required, but it's a good idea to check in advance for group bookings or special events.
Q3. Is Oumijima suitable for families?
Yes. The sightseeing boats and hiking courses are safe and enjoyable for children. However, exercise caution near cliff edges.
Enjoy a special time connecting with nature on Oumijima!
