Yakushima: The Island of Ancient Cedar Forests

Explore Yakushima, Kagoshima's World Heritage island of ancient cedars, moss forests and waterfalls, with access, hiking tips and the best seasons.

Published October 18, 2026 at 5:06 AM JST | By Tokyo Paul

Quick answer: Yakushima is a World Heritage island in Kagoshima Prefecture famous for yakusugi, Japanese cedars at least a thousand years old, plus mossy forests and heavy rainfall. Visitors reach it by plane or jetfoil from Kagoshima and should always pack rain gear.

What Makes Yakushima So Special?

Picture a round green island rising out of the East China Sea, wrapped in mist, with granite peaks above and cedar trees older than most countries below. That is Yakushima, a small island in Kagoshima Prefecture in southern Japan, and it is one of the most beloved nature destinations in the country. It covers about 505 square kilometers, and its highest peak, Miyanoura-dake, rises to roughly 1,900 meters, so the island combines subtropical coast with cool mountain forest. This guide explains what the island is famous for, how to reach it, what the trails are like, and how to plan a trip that feels calm and well prepared.

Yakushima was inscribed as a UNESCO World Natural Heritage site in 1993, and around forty percent of the island lies inside Yakushima National Park. Its mix of coastline, mountain forest and heavy rainfall created a landscape of deep green moss, clear rivers and giant trees. Many visitors say the atmosphere feels like walking inside a living painting.

What Is a Yakusugi, and Why Are the Cedars Famous?

A yakusugi is a Japanese cedar (Cryptomeria japonica, called sugi in Japanese) that grows on Yakushima and is at least a thousand years old. The slow growth in the island's granite soil gives yakusugi dense wood and a rich resin, which helped the trees survive for centuries. Today the oldest examples are protected, and the surviving old-growth forest is one of the main reasons the island is so admired.

The most celebrated tree is the Jomon Sugi, named after the ancient Jomon period of Japanese prehistory. It is estimated to be well over two thousand years old, and its thick, knotted trunk makes it a pilgrimage goal for hikers. Other named trees dot the island's trails, each with a story and a nickname, and part of the fun is looking for them along the way. Walking among such huge trunks tends to leave people feeling pleasantly small.

Which Forests and Trails Should You Visit?

Shiratani Unsuikyo is a ravine of mossy boulders, clear streams and old cedars, and it is the best-known short forest walk on the island. The island's forests are widely said to have inspired the scenery of Hayao Miyazaki's film Princess Mononoke. Several walking courses of different lengths wind through the ravine, so visitors can choose a gentle stroll or a longer hike. The soft green carpet of moss is especially photogenic after rain.

Yakusugi Land is another popular forest area, with five walking courses ranging from about 30 to 210 minutes, so it suits people who want to see big trees without a very long day. The longer courses call for proper walking equipment. For something even more relaxed, many travelers head to the island's waterfalls and coastal spots, as well as its hot springs, which are a lovely reward after a day outdoors. The Yakushima Tourism Association and the Yakushima World Heritage Conservation Center both publish helpful information in English about courses, guides and gear rental.

The Jomon Sugi hike is a different level of commitment. It begins at the Arakawa Trailhead and follows long stretches of an old logging railway line before climbing on dirt paths, boardwalks and wooden steps. The round trip is a full-day outing, so hikers normally start very early to finish before dark. In the busier months a shuttle service from the Yakusugi Museum runs to the trailhead, and private cars may not use the access road, so check the current rules and ticketing before you go. Trails are signed in Japanese and English, and guided hikes are available for those who want local knowledge.

How Do You Get to Yakushima?

You can reach Yakushima by air or by sea from Kagoshima. The flight from Kagoshima Airport to Yakushima Airport takes about 40 minutes, and there are also connections with other cities such as Fukuoka and Osaka. High-speed ferries, called jetfoils, and slower car ferries cross from Kagoshima Port to the island's main ports, with the quicker option taking around two hours. Schedules can change with the sea conditions, so build a little flexibility into your itinerary.

Once on the island, public transport is limited, which is why many visitors rent a car or use taxis and tour services. A single main road circles the coast, and most trailheads are reached by turning inland on narrower mountain roads. Plan to stay at least two or three nights if you want to experience more than one forest area, because travel times add up and weather can change your plans.

When Is the Best Time To Visit, and What Should You Pack?

Spring and autumn are generally the most comfortable seasons for hiking on Yakushima, with milder temperatures and fresh air. Summer is warm, humid and lively, but it can also be very hot at lower elevations, while winter can bring snow to the high trails. Yakushima is famous for being one of the wettest places in Japan, so rain is part of the experience in any month, and you should expect some wet weather even in the best season.

Packing well makes a big difference. Waterproof rain gear, sturdy hiking boots with good grip, quick-drying layers, a small first aid kit, snacks and plenty of water are all sensible items. A flashlight or headlamp is useful on early starts, and many hikers add a dry bag for their phone and camera. Stay on marked trails to protect the fragile moss and tree roots, and follow the island's registration and conservation guidance, which is explained at trailheads and information centers.

Quick Takeaways for a Smooth Yakushima Trip

Choose your adventure based on time and energy. A short walk through Shiratani Unsuikyo or Yakusugi Land gives you the island's forest magic in half a day, while the Jomon Sugi trek is a rewarding full-day challenge for confident hikers. Travel by plane or jetfoil from Kagoshima, book accommodation and transport ahead, and always pack for rain. As of autumn 2026, rules for shuttle buses, trail access and conservation fees can change, so confirm details with the official tourism sources before you travel.

Most of all, slow down. The trees have been growing here for thousands of years, and the best way to enjoy them is to walk quietly, listen to the streams and let the green light do its work.

Frequently Asked Questions

How do you get to Yakushima from Kagoshima?

You can fly from Kagoshima Airport to Yakushima Airport in about 40 minutes, or take a jetfoil or car ferry from Kagoshima Port. The fastest ferry takes around two hours. Schedules depend on sea conditions, so check ahead.

What is a yakusugi?

A yakusugi is a Japanese cedar that grows on Yakushima and is confirmed as more than a thousand years old. The best-known example is the Jomon Sugi, which is estimated to be well over two thousand years old and is reached on a full-day hike.

When is the best time to visit Yakushima?

Spring and autumn are generally the most comfortable seasons for hiking. Summer is hot and humid, and winter can bring snow to high trails. Yakushima is among the wettest places in Japan, so rain gear is useful in any month.