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.

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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.
Yaku-shima
Yakushima, Kagoshima Prefecture, Japan
30.3333, 130.5000
No national park entry fee; some trail permits and ferry/boat costs apply

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.

Spring
Mar-May · 12-22°C (54-72°F)
Wildflowers and manageable rainfall; good for trekking.
Autumn
Sep-Nov · 18-24°C (64-75°F)
Warm seas and clearer skies; lower typhoon risk than late summer.
Winter
Dec-Feb · 6-14°C (43-57°F)
Cool on the summits; snow dusts the higher ridges, offering dramatic contrasts.

Weather & Climate near Yaku-shima #

Climate

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.

Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
32°
Warmest Month
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 4°C and lows of -2°C. Significant rainfall (154 mm), mostly overcast skies, and breezy conditions.

32 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
75%
Humidity
Very Humid

Weather

154 mm
Rainfall
8.9 m/s
Wind
Breezy
0.5
UV Index
Moderate
10.3h daylight

February

February is cold with highs of 5°C and lows of -1°C. Significant rainfall (186 mm), mostly overcast skies, and breezy conditions.

34 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
74%
Humidity
Very Humid

Weather

186 mm
Rainfall
8.1 m/s
Wind
Breezy
0.8
UV Index
Moderate
11.0h daylight

March

March is cold with highs of 8°C and lows of 1°C. Heavy rain (261 mm), mostly overcast skies, and breezy conditions.

34 Poor

Comfort

Feels Like Cold
C
Temperature
73%
Humidity
Very Humid

Weather

261 mm
Rainfall
7.3 m/s
Wind
Breezy
1.1
UV Index
High
11.9h daylight

April

April is cold with highs of 12°C and lows of 6°C. Heavy rain (319 mm), mostly overcast skies, and breezy conditions.

42 Poor

Comfort

Feels Like Cold
C
Temperature
12°
74%
Humidity
Very Humid

Weather

319 mm
Rainfall
6.6 m/s
Wind
Breezy
1.4
UV Index
High
12.8h daylight

May

May is cool with highs of 15°C and lows of 10°C. Heavy rain (410 mm) and mostly overcast skies.

54 Acceptable

Comfort

12°
Feels Like Cool
12°C
Temperature
10° 15°
78%
Humidity
Very Humid

Weather

410 mm
Rainfall
5.7 m/s
Wind
Light Breeze
1.6
UV Index
Very High
13.6h daylight

June

June is cool with muggy conditions (dew point 22°C). The wettest month with heavy rain (581 mm) and mostly overcast skies.

54 Acceptable

Comfort

16°
Feels Like Cool
16°C
Temperature
13° 18°
86%
Humidity
Very Humid

Weather

581 mm
Rainfall
5.6 m/s
Wind
Light Breeze
1.5
UV Index
Very High
13.9h daylight

July

July is the warmest month with stifling humidity (dew point 25°C). Heavy rain (456 mm) and partly cloudy skies.

60 Good

Comfort

19°
Feels Like Mild
19°C
Temperature
16° 22°
85%
Humidity
Very Humid

Weather

456 mm
Rainfall
5.4 m/s
Wind
Light Breeze
2.1
UV Index
Extreme
13.8h daylight

August

August is the warmest month with stifling humidity (dew point 25°C). Heavy rain (380 mm) and partly cloudy skies.

64 Good

Comfort

19°
Feels Like Mild
19°C
Temperature
16° 22°
81%
Humidity
Very Humid

Weather

380 mm
Rainfall
5.5 m/s
Wind
Light Breeze
2.1
UV Index
Extreme
13.1h daylight

September

September is cool with muggy conditions (dew point 23°C). Heavy rain (306 mm), partly cloudy skies, and breezy conditions.

58 Acceptable

Comfort

17°
Feels Like Cool
17°C
Temperature
14° 19°
79%
Humidity
Very Humid

Weather

306 mm
Rainfall
6.0 m/s
Wind
Breezy
1.6
UV Index
Very High
12.2h daylight

October

October is cool with highs of 16°C and lows of 10°C. Significant rainfall (200 mm), partly cloudy skies, and breezy conditions.

56 Acceptable

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 16°
74%
Humidity
Very Humid

Weather

200 mm
Rainfall
6.9 m/s
Wind
Breezy
1.1
UV Index
High
11.3h daylight

November

November is cold with highs of 11°C and lows of 5°C. Significant rainfall (176 mm), mostly overcast skies, and breezy conditions.

44 Poor

Comfort

Feels Like Cold
C
Temperature
11°
73%
Humidity
Very Humid

Weather

176 mm
Rainfall
7.6 m/s
Wind
Breezy
0.7
UV Index
Moderate
10.5h daylight

December

December is cold with highs of 7°C and lows of 1°C. Significant rainfall (136 mm), mostly overcast skies, and breezy conditions.

38 Poor

Comfort

Feels Like Cold
C
Temperature
74%
Humidity
Very Humid

Weather

136 mm
Rainfall
8.8 m/s
Wind
Breezy
0.5
UV Index
Low
10.1h daylight

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