Yakushima Guide

Yakushima is reached from Kagoshima city by jetfoil (1h45, ¥8,200) or high-speed ferry (2h, ¥4,500), or by flight (40 min, from ¥15,000). Kagoshima is connected to the rest of Japan by Shinkansen (Tokyo 7h, Osaka 4h, Fukuoka 1.5h). Ferries run from Kagoshima Taniyama Port (high-speed) and Kagoshima Shin-ko (overnight). Yakusugi Land and the Jomon Sugi trailheads require a shuttle bus from Miyanoura or Anbo ports (¥800–1,500); the shuttle schedule is seasonal.

Jomon Sugi (縄文杉) is a massive Japanese cedar (Cryptomeria japonica) standing 25.3m tall with a trunk circumference of 16.4m — the oldest and largest cedar on Yakushima. Age estimates range from 2,170 to 7,200 years. The round-trip hike is 22km and takes 8–10 hours. The trail begins at Arakawa Trailhead (shuttle bus required; private cars prohibited April–November) and follows abandoned railway tracks through old-growth forest before a steep final climb. Recommended: start before 6am, carry 2L water, and pack rain gear — Yakushima receives over 4m of rain annually.

The Jomon Sugi trail is a long-distance hike requiring reasonable fitness — 22km round trip with 600m elevation gain. The track surface is mostly maintained wooden boardwalk and former logging rail track, making it less technically demanding than mountain climbs. However, the length (8–10 hours), unpredictable weather, and remote forest environment require preparation. Essentials: waterproof jacket, sturdy shoes, headlamp, warm layer, high-calorie food, and 2L water. Guided tours (¥12,000–20,000) are recommended for first-time hikers; guides know the route, weather, and when to turn back.

March–May is often considered the best season — warm, lower rainfall than summer, and rhododendron blooms at altitude. July–August brings sea turtles nesting on Isso and Nagata beaches (night access permitted with ranger guidance) but also peak crowds. September–October is beautiful with fewer people and comfortable temperatures. November–February is off-season with cooler hiking, but higher-elevation trails can have snow. The island receives rain year-round (Yakushima is said to "rain 35 days a month") — a poncho is essential in all seasons. June is the rainiest month.

Yakushima has two endemic subspecies: the Yakushima macaque (Yaku-zaru) and the Yakushima deer (Yaku-shika), both smaller than mainland counterparts. They frequently appear along roadsides and at Shiratani Unsuikyo ravine. Sea turtles (loggerhead and hawksbill) nest on beaches July–August; Nagata Inakahama beach is Japan's largest sea turtle nesting site. Yakushima flying squirrels (Yaku-musasabi) inhabit old-growth forest. Offshore, short-beaked common dolphins and humpback whales are seen in spring. The forest is otherwise rich in endemic birds including the Yakushima woodpecker and Japanese robin.