Yaku-shima Island
Island of ancient cedar forests and rich biodiversity
Yakushima is an island south of Kyushu known for ancient cedar forests-including Jōmon Sugi-humid mountain trails, heavy rainfall, and UNESCO recognition that draws hikers and nature photographers.
Yaku-shima at a Glance#
Address: Yakushima, Kagoshima Prefecture, Japan
Website: https://www.pref.kagoshima.jp/ae07/kurashi/3500.html (prefectural info)
Admission: No national park entry fee; some trail permits and ferry/boat costs apply
About Yaku-shima#
Yakushima is a forested island in Kagoshima Prefecture known for its ancient cedar forests, high rainfall and rugged mountain interior. The island’s ecology includes internationally significant Yakusugi cedars and a mix of temperate and subtropical ecosystems.
Key natural attractions include ancient cedars such as Jōmon Sugi, moss-covered ravines like Shiratani Unsuikyo and Mount Miyanoura, the island’s highest point at about 1,936 metres. The landscape supports endemic plants and wildlife and offers hiking routes from short circuits to multi-day backcountry treks.
Human settlement on Yakushima is longstanding but sparse; the island’s forests were logged in the past and later protected, leading to its inscription as a UNESCO Natural World Heritage Site in 1993. Conservation and sustainable tourism are prominent aspects of contemporary management.
Yakushima lies off the southern coast of Kyushu in Kagoshima Prefecture, about 60 km south of the Kyushu mainland. The main entry points are ferry and air services to the island’s ports and small airport, and the interior is mountainous with limited road access to trailheads.
- World Heritage status: The island is a UNESCO Natural World Heritage Site noted for its ancient cedar forests, heavy rainfall and unique biodiversity.
- Trail and access note: Trails range from short walks to multi-day hikes; prepare for wet weather and steep, muddy terrain, and check transport schedules to/from the main ferry and air links.
What to See#
- Jōmon Sugi: Jōmon Sugi - an ancient Yakusugi cedar on the island’s central ridges, estimated at between about 2,000 and 7,000 years old and a primary draw for hikers.
- Shiratani Unsuikyo Ravine: Shiratani Unsuikyo - a mossy, forested ravine with well-maintained trails and valleys that inspired studio animator works and is popular for day hikes.
- Mount Miyanoura: Mount Miyanoura - the island’s highest peak at roughly 1,936 metres, commonly climbed by multi-day routes offering alpine and forest scenery.
How to Get to Yaku-shima#
Most visitors reach Yakushima by air from Kagoshima Airport (about 40 minutes) to Yakushima Airport (JAC). Ferries also run from Kagoshima Port to Miyanoura or Anbō (2.5-4 hours depending on service). Local buses connect ports/airports to trailheads such as Shiratani Unsuikyo and Jōmon Sugi parking areas.
Tips for Visiting Yaku-shima#
- Take the ferry from Anbō Port or Tanegashima ferry connections - check schedules, as crossings are infrequent.
- Hike the Shiratani Unsuikyo early: dawn mist transforms the mossy cryptomeria into a cinematic forest.
- Bring waterproof boots and a warm layer; rainfall is high year-round.
- Respect the island's resident deer and macaques: keep distance and don't feed wildlife.
Best Time to Visit Yaku-shima#
Best visited in spring and autumn for trekking and sea access; ferry schedules and frequent rain make logistics the decisive factor.
Weather & Climate near Yaku-shima#
Yaku-shima's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in July) and cold winters (coldest in January). Temperatures range from -2°C to 22°C. Heavy rainfall (3565 mm/year), wettest in June.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | -2° - 4° | -5° | 154 mm | overcast | 75% | 8.9 m/s | 0.5 moderate | 10.3h |
| February | Poor | -1° - 5° | -4° | 186 mm | overcast | 74% | 8.1 m/s | 0.8 moderate | 11.0h |
| March | Poor | 1° - 8° | 0° | 261 mm | overcast | 73% | 7.3 m/s | 1.1 high | 11.9h |
| April | Poor | 6° - 12° | 6° | 319 mm | overcast | 74% | 6.6 m/s | 1.4 high | 12.8h |
| May | Acceptable | 10° - 15° | 12° | 410 mm | overcast | 78% | 5.7 m/s | 1.6 very high | 13.6h |
| June | Acceptable | 13° - 18° | 16° | 581 mm | overcast | 86% | 5.6 m/s | 1.5 very high | 13.9h |
| July | Good | 16° - 22° | 19° | 456 mm | partly cloudy | 85% | 5.4 m/s | 2.1 extreme | 13.8h |
| August | Good | 16° - 22° | 19° | 380 mm | partly cloudy | 81% | 5.5 m/s | 2.1 extreme | 13.1h |
| September | Acceptable | 14° - 19° | 17° | 306 mm | partly cloudy | 79% | 6.0 m/s | 1.6 very high | 12.2h |
| October | Acceptable | 10° - 16° | 13° | 200 mm | partly cloudy | 74% | 6.9 m/s | 1.1 high | 11.3h |
| November | Poor | 5° - 11° | 5° | 176 mm | overcast | 73% | 7.6 m/s | 0.7 moderate | 10.5h |
| December | Poor | 1° - 7° | -2° | 136 mm | overcast | 74% | 8.8 m/s | 0.5 low | 10.1h |