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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 12.8–19.9°C, 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 23.6–29.2°C, 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 20.8–16.0°C, 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 9.0–8.8°C, 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. 18°C / Annual rainfall: approx. 2007 mm / Summer humidity: 70%–80% / Rainiest month: June

Hashima Island monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
7.6°C
93
February
8.8°C
86.3
March
12.8°C
212
April
17°C
194.7
May
19.9°C
207
June
23.6°C
324.7
July
28.1°C
282.3
August
29.2°C
243.7
September
27.1°C
165.3
October
20.8°C
69
November
16°C
85.7
December
9°C
43.3

Hashima Island weather for the next seven days

12/14
Sunday
Patchy rain nearby
11°C/9.9°C
12/15
Monday
Patchy rain nearby
12.2°C/8.5°C
12/16
Tuesday
Sunny
13.3°C/8°C
12/17
Wednesday
Moderate rain
15.2°C/11.5°C
12/18
Thursday
Sunny
15.6°C/11.3°C
12/19
Friday
Sunny
16.4°C/10.6°C
12/20
Saturday
Cloudy
16.7°C/13.1°C

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.