Yakushima is worth the effort. The island sits 60 kilometers off the southern tip of Kyushu, covered in ancient cedar forests that get more rain than almost anywhere else in Japan. Getting there takes planning. Staying long enough takes commitment. But no one who makes the trip comes back disappointed. The hike, whether it is the 10-hour Jomon Sugi trail to one of the oldest trees on Earth or the shorter walk through the moss-covered Shiratani Unsuikyo forest, is the kind of experience that ends up being the best day of a Japan trip.
Have 3-4 days and a rental car? Go. This is the full Yakushima experience: one day for Shiratani Unsuikyo, one for Jomon Sugi or the coast, one for the ocean onsen and river kayaking. Have 2 days without a car? Still worth it. Pick one hike, use buses for the trailhead, book a guided tour for the second day. Only have 1 day? Skip it. One night on Yakushima means more time on ferries than on trails.
Which hike should you do?
Shiratani Unsuikyo is the one to start with. The trail winds through moss-covered forest that inspired the landscapes in Princess Mononoke, with routes ranging from a 2-hour walk to a full-day trek. You are walking among ancient cedars within 15 minutes of the entrance. The full trail to Taikoiwa rock adds a ridge overlook across the mountains and is worth the extra effort if you have it in you.
Jomon Sugi is the famous draw: a cedar tree estimated at 2,000 to 7,000 years old, one of the oldest living things on Earth. The hike takes 10-12 hours round trip. You start before dawn, follow an old rail-track path through the forest, pass Wilson's Stump (a hollow cedar large enough to stand inside), and reach the tree around midday. It is a serious commitment. The rule experienced hikers repeat: if you have not reached the tree by 1pm, turn around.
Yakusugiland is the accessible option. Boardwalk paths wind through old-growth forest with no serious elevation change. You still walk among thousand-year-old trees, just without the 10-hour time commitment.
| Trail | Time | Difficulty | What You Do |
|---|---|---|---|
| Shiratani Unsuikyo | 2–5 hours | Easy to moderate | Moss forest, Mononoke landscape, Taikoiwa overlook |
| Jomon Sugi | 10–12 hours | Hard | Rail-track path, Wilson's Stump, Japan's oldest tree |
| Yakusugiland | 1–3 hours | Easy | Boardwalk paths through old-growth cedar |
| Mt. Miyanoura | Overnight | Hard | Kyushu's highest peak (1,936m), free mountain huts |
How do you get there?
From Kagoshima, a jetfoil takes about 2 hours and costs around ¥12,700 one way (¥23,300 round trip). Reserve tickets online in advance because seats sell out, especially in peak season. After typhoon cancellations, the terminal becomes chaotic with walk-up passengers trying to rebook. The slow ferry takes about 4 hours for around ¥5,000-6,000 and is less likely to sell out. There is also an overnight ferry that arrives around 7am for about ¥3,800.
Flights from Kagoshima take 40 minutes on a small propeller plane. When booked 45 or more days ahead, the fare can undercut the jetfoil's ¥12,700. Flights are also the last option standing when ferries cancel during bad weather, so having a flight as backup during typhoon season is worth considering.
From Tokyo or Osaka, budget a full travel day. The Shinkansen to Kagoshima takes about 6 hours from Tokyo, 4 from Osaka, then add the jetfoil. Or fly to Kagoshima and connect. Either way, Yakushima is not a casual side trip. Build it into your Kyushu itinerary as its own destination with dedicated days.
Do you need a car?
A rental car makes Yakushima significantly better. The island has one road that loops around the coast, traffic is almost nonexistent, and it is genuinely the easiest place in Japan to drive. The western coast, the ocean-side onsen, and the smaller trailheads are effectively inaccessible without one. If you have ever considered driving in Japan but felt nervous about it, Yakushima is where to start. The roads are empty, the layout is simple, and there is nowhere to get lost.
Without a car, Yakushima still works. Buses run on time and reach the main trailheads. The Jomon Sugi bus runs three times a day, so your schedule revolves around it. Guided tours fill the gaps and add local context that you would miss on your own. Three days without a car is doable if you plan around the bus timetable and accept that you will see less of the coast.
The verdict: if you can drive, drive. If you cannot, go anyway.
How many days do you need?
Three nights is the sweet spot. That gives you two full days on the island: one for a major hike, one for the coast, onsen, or a second trail. The third day is your weather buffer, and on Yakushima, you will probably need it.
Two nights works if the weather cooperates. Arrive by mid-morning, hike the shorter Shiratani Unsuikyo route that afternoon, spend the next day on Jomon Sugi or exploring by car, and catch a morning ferry on day three.
One night is not enough. By the time you arrive from the ferry port and get oriented, half the day is gone. The return ferry leaves early enough the next morning that you cannot fit a meaningful hike in between. This is the most common planning mistake, and the people who made it consistently say they wish they had stayed longer.
What about the rain?
Yakushima gets about 4,000 to 4,500mm of rain per year at the coast and up to 10,000mm in the mountains. For context, London gets about 600mm. It rains year-round, and the rainy season runs from roughly January through November.
This is not a reason to skip Yakushima. It is a reason to prepare for it. Full rain gear (jacket, pants, waterproof bag covers) is non-negotiable. The forest looks its best in the rain: the moss glows green, the streams swell, the mist sits in the cedars. Most of the Yakushima photos you have seen were taken in the rain.
The real risk is typhoons, mainly July through October. Ferries cancel. Trails close when creeks rise. A planned 4-day trip can become 3 days if a storm rolls through. Budget an extra day as insurance, and during typhoon season, have a flight booking as backup for when the ferries stop running.
What else is there besides hiking?
The ocean-side onsen at low tide are an experience unique to Yakushima. Hot springs sit in the rocks at the waterline, accessible only when the tide drops. Get there before sunrise for the best soak. You need a car to reach them.
River kayaking is a quieter highlight. The rivers are gentle and scenic, with guided half-day tours running regularly. The Yakushima deer, small enough to look like large dogs, wander the roads and forest trails. Monkeys call to each other in the canopy above the hiking paths. Sea turtles nest on the southern beaches between May and August.
The food scene is limited but has one local specialty: flying fish, which shows up in ramen and dried as a snack. The island's restaurants concentrate in Miyanoura (the main port town) and Anbo on the east coast. Bring snacks and set low expectations for dining variety.
For the full Kyushu route, Yakushima adds 3-4 days to a train-based itinerary. Pair it with Kagoshima, which connects directly by ferry, and Beppu for onsen bookends to a Southern Japan trip.