Iki Island Island

Rural Nagasaki island with archaeological and beach sites

In Nagasaki Prefecture, Iki Island mixes sandy coves, fishing villages and archaeological sites from the Yayoi period; visitors travel for beaches, fresh seafood and coastal walks.

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Aoshima, an uninhabited island where Iki Island's thermal power plant is located.jpg
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Iki Island Aerial photograph.2017.jpg
Iki Island Aerial photograph.May 2017.jpg
Iki Island booth, CWT47 20171210.jpg
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Tonboro Shrine.jpg
View of Iki Island from the Waterfoil-476.jpg
View of Iki Island from the Waterfoil-477.jpg
View of Iki Island from the Waterfoil-479.jpg

Iki Island at a Glance#

Address: Iki Island, Nagasaki Prefecture, Japan

About Iki Island#

Iki Island (Iki-shima) is an island in Nagasaki Prefecture in southwestern Japan, located in the waters between Kyushu and Tsushima in the Genkai Sea. It is administered as Iki City and combines coastal settlements with rural interior landscapes.

The island’s attractions are coastal scenery, beaches, and local fishing harbours; it is also known for archaeological sites and traditional festivals. Travel to the island is by ferry or short domestic flight from mainland Kyushu, and visitors use local roads to reach beaches and small villages.

Iki has a long human presence with archaeological remains from ancient periods to the present; the island developed as a maritime and local administrative centre under successive regional authorities. In modern times it functions as a small regional hub for fishing, tourism and local services.

Geographically the island lies off the northwest coast of Kyushu in Nagasaki Prefecture; the main settlement and ferry/air links form the island’s transport nodes to the larger cities of Kyushu.

Tips for Visiting Iki Island#

  • Book your ferry (and any vehicle space) well before high season or Golden Week - regular ferry connections from Kyushu (Fukuoka/Hakata) can fill and schedules are limited outside peak times.
  • Use Iki's main port (Iki City/Livadi area) as your base for exploring; services and public-transport frequencies are limited, so plan day routes around published bus timetables or arrange a rental vehicle in advance.
  • Go beyond the main beaches: the island has kofun (burial mounds), small shrines and coastal walks that many day-trippers miss - allow at least one full day to explore the interior and less-frequented coves.

Best Time to Visit Iki Island#

For Iki Island, aim for late spring or early autumn for mild weather and fewer crowds, while avoiding the main rainy and typhoon season.

Late spring (ideal)
May · 15 to 22°C
Pleasant temperatures, before the main rainy season and tourist peak-good for beaches and outdoor exploration.
Summer
Jun-Aug · 22 to 30°C
Warm to hot and humid; June-July often sees the rainy season and August can bring typhoon risk-expect heavier rain and higher humidity.
Autumn
Sep-Oct · 18 to 24°C
Generally pleasant temperatures and fewer tourists, but early autumn can still carry typhoon risk in some years.

Weather & Climate near Iki Island#

Climate

Iki Island's climate is classified as Humid Subtropical - Humid Subtropical climate with hot summers (peaking in August) and cold winters (coldest in January). Temperatures range from 3°C to 29°C. Abundant rainfall (1638 mm/year), wettest in June.

Air Quality: AQI 55 Moderate
Best Time to Visit
AugustOctoberJuly
Temperature & Rainfall
Temperature Range
32°
Warmest Month
-2°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Acceptable 3° - 9° 3° 62 mm overcast 73% 3.7 m/s 0.4 low 10.1h
February Acceptable 4° - 10° 4° 70 mm overcast 71% 3.6 m/s 0.6 moderate 10.9h
March Acceptable 7° - 12° 8° 95 mm overcast 71% 3.6 m/s 0.9 moderate 11.9h
April Acceptable 11° - 17° 14° 142 mm overcast 76% 3.5 m/s 1.3 high 12.9h
May Good 15° - 21° 18° 138 mm overcast 82% 3.1 m/s 1.5 very high 13.8h
June Good 19° - 24° 22° 280 mm overcast 88% 3.2 m/s 1.5 high 14.2h
July Good 24° - 28° 26° 233 mm overcast 89% 3.2 m/s 1.8 very high 14.0h
August Very Good 25° - 29° 27° 150 mm partly cloudy 84% 3.1 m/s 1.8 very high 13.2h
September Good 21° - 26° 23° 228 mm overcast 79% 3.0 m/s 1.4 high 12.3h
October Good 16° - 22° 19° 93 mm partly cloudy 72% 3.3 m/s 1.0 moderate 11.2h
November Good 10° - 17° 13° 82 mm overcast 70% 3.0 m/s 0.5 moderate 10.3h
December Acceptable 5° - 12° 7° 65 mm overcast 73% 3.0 m/s 0.3 low 9.8h