Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island
Nature Reserve Ryukyu islands group with endemic species and coral reefs
A string of Ryukyu and subtropical islands in southern Japan, these sites feature coral reefs, mangroves and evergreen forests; visitors come for diving, hiking, endemic wildlife and local island traditions and crafts.
Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island is a transnational natural site in southwestern Japan inscribed in 2021 for its subtropical forests and high levels of endemism. The property covers multiple islands in the Ryukyu archipelago with distinctive forest ecosystems.
The inscribed islands host evergreen broadleaf forests, mangroves and varied coastal and inland habitats that support a suite of endemic species, including the Amami rabbit and the Iriomote cat. Forested ridges, karst landscapes and riparian corridors form critical habitat patches and ecological gradients.
Conservation measures on the islands aim to protect remaining forest cover and the habitats of restricted-range species; threats include habitat fragmentation and invasive species. Scientific monitoring focuses on population status for key endemic animals.
The islands lie in the Ryukyu chain in southwestern Japan, scattered between Kyushu and Taiwan, and are reached by regional air and ferry links from Okinawa and Kagoshima prefectures.
- Endemic species: Contains several endemic mammals and reptiles, notably the Amami rabbit on Amami-Oshima and the Iriomote cat on Iriomote, making it a biodiversity priority.
What to See #
- Amami-Oshima: Amami-Oshima, with subtropical evergreen forest and endemic fauna including the Amami rabbit restricted to these islands.
- Tokunoshima: Tokunoshima Island, with limestone and forested habitats supporting several endemic plant and animal species.
- Northern Okinawa (Yanbaru): The northern part of Okinawa Island (Yanbaru), a contiguous area of subtropical forest important for native bird and reptile species.
- Iriomote: Iriomote Island, noted for its mangroves, inland waterways and the endemic Iriomote cat that occurs only on this island.
How to Get to Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island #
These are four separate islands/areas in southwestern Japan; access is by a mix of domestic flights, ferries and roads. Amami Ōshima and Tokunoshima are served by local airports (Amami Airport and Tokunoshima Airport) with regular domestic flights from Kagoshima and Naha (Okinawa); from those airports you can rent a car or take local buses/taxis to points on the islands. Iriomote is reached via Ishigaki - fly to New Ishigaki Airport and then take a ferry or high-speed boat from Ishigaki Port to ports on Iriomote (ferries operate regularly). The northern (Yanbaru) area of Okinawa Island is reached from Naha: fly into Naha Airport, then drive or take intercity buses north into Yanbaru (road travel from Naha is the usual option) and use local buses or taxis to reach trailheads and temples. Omit specific bus numbers because services vary by island and season; check current domestic flight and ferry timetables on arrival.
Tips for Visiting Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island #
- Aim for spring (April-May) or autumn (October-November) and visit early in the morning: these seasons avoid the peak summer typhoon heat and holiday crowds, and mornings are best for seeing endemic forest birds and quieter coastal areas.
- Plan island-to-island logistics and book ferries/flight legs well in advance during Japanese holiday periods (Golden Week and Obon) - inter-island connections are limited and sell out quickly, especially to Iriomote and Tokunoshima.
- Most visitors concentrate on beaches and mangrove boat tours; to see more of the World Heritage values, add guided inland walks or eco-tours that focus on native subtropical forest, limestone caves and traditional village sites, which are less visited.
- When on the smaller islands, use local visitor centers or certified eco-guides to reach protected habitats and to ensure you follow access rules (many zones restrict independent access to protect rare species).
Best Time to Visit Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island #
Late spring or autumn are the best times to visit to enjoy warm weather while avoiding the heaviest rains and typhoon season.
Weather & Climate near Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island #
Amami-Oshima Island, Tokunoshima Island, Northern part of Okinawa Island, and Iriomote Island's climate is classified as Humid Subtropical - Humid Subtropical climate with hot summers (peaking in July) and cool winters (coldest in January). Temperatures range from 11°C to 30°C. Heavy rainfall (2613 mm/year), wettest in June.
January
January is the coolest month with highs of 16°C and lows of 11°C. Significant rainfall (144 mm), mostly overcast skies, and breezy conditions.
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February
February is cool with highs of 16°C and lows of 11°C. Significant rainfall (161 mm), mostly overcast skies, and breezy conditions.
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March
March is cool with highs of 18°C and lows of 13°C. Significant rainfall (189 mm) and mostly overcast skies.
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April
April is mild with highs of 21°C and lows of 16°C. Heavy rain (249 mm) and mostly overcast skies.
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May
May is mild with highs of 24°C and lows of 19°C. Heavy rain (315 mm) and mostly overcast skies.
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June
June is warm with muggy conditions (dew point 23°C). The wettest month with heavy rain (397 mm) and mostly overcast skies.
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July
July is the hottest month, feeling like 30°C with oppressive humidity. Heavy rain (226 mm) and partly cloudy skies.
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August
August is hot, feeling like 30°C with oppressive humidity. Heavy rain (231 mm) and partly cloudy skies.
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September
September is warm with muggy conditions (dew point 24°C). Heavy rain (202 mm) and partly cloudy skies.
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October
October is mild with highs of 25°C and lows of 20°C. Significant rainfall (176 mm) and mostly overcast skies.
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November
November is mild with highs of 21°C and lows of 16°C. Significant rainfall (190 mm) and mostly overcast skies.
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December
December is cool with highs of 18°C and lows of 12°C. Significant rainfall (133 mm), mostly overcast skies, and breezy conditions.
