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Hashima Island

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Hashima Island Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Hashima Island year round climate

  • Spring (March–May): Average 55–67°F, mild climate but relatively high rainfall, especially in March and April. Common activities: Island exploration, visiting historical sites. Recommended clothing: Light jacket, comfortable trousers, rain gear.
  • Summer (June–August): Average 74–84°F, hot and humid with abundant rainfall, especially in June. Common activities: Beach activities (if permitted), indoor visits to museums or historical buildings. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 69–60°F, comfortable and pleasant climate with reduced rainfall. Common activities: Island walks, enjoying the sea view. Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): Average 48–47°F, low temperatures, relatively dry. Common activities: Indoor activities, visiting museums or historical buildings. Recommended clothing: Warm jacket, hat, gloves, scarf.

Hashima Island climatological average

Annual average temperature: approx. 64.4°F / Annual rainfall: approx. 2007 mm / Summer humidity: 70%–80% / Rainiest month: June

Hashima Island monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
45.7°F
93
February
47.8°F
86.3
March
55°F
212
April
62.6°F
194.7
May
67.8°F
207
June
74.5°F
324.7
July
82.6°F
282.3
August
84.6°F
243.7
September
80.8°F
165.3
October
69.4°F
69
November
60.8°F
85.7
December
48.2°F
43.3

Hashima Island weather for the next seven days

6/20
Saturday
Heavy rain
76.9°F/73°F
6/21
Sunday
Patchy rain nearby
77.5°F/71.6°F
6/22
Monday
Patchy rain nearby
72.7°F/66.1°F
6/23
Tuesday
Sunny
81°F/66.1°F
6/24
Wednesday
Patchy rain nearby
77.6°F/68.5°F
6/25
Thursday
Patchy rain nearby
74.6°F/68.5°F
6/26
Friday
Patchy rain nearby
76°F/70.2°F

Hashima Island Frequently Asked Questions and Useful Information for Travel

Why is Hashima Island abandoned?

Hashima Island was abandoned because its undersea coal mines ran out of coal, leading to their closure in 1974. As Japan transitioned to petroleum, the coal-dependent economy of the island became obsolete, forcing the inhabitants to leave. The island, once one of the most densely populated places on Earth, became a ghost town and a symbol of rapid industrialization, with nature slowly reclaiming its concrete structures.

How many people died at Hashima Island?

During the period of forced labor on Hashima Island, it is estimated that about 1,300 conscripted laborers died on the island due to various dangers, including underground accidents, exhaustion, and malnutrition.

What is the mystery of Hashima Island?

The island's most notable features are its abandoned concrete buildings, undisturbed except by nature, and the surrounding seawall. While the island is a symbol of the rapid industrialisation of Japan, it is also a reminder of Japanese war crimes as a site of forced labour prior to and during World War II.

Is it illegal to visit Hashima Island?

The punishment for being caught visiting Hashima Island without authorization is 30 days in prison followed by immediate deportation.

What is Hashima Island known for?

Hashima Island, also known as Gunkanjima, is famous for its dramatic abandoned concrete cityscape, which earned it the nickname 'Battleship Island.' It stands as a stark monument to Japan's rapid industrialization and a UNESCO World Heritage site.