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Izu Oshima

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Izu Oshima Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Izu Oshima year round climate

  • Spring (March–May): Average 12.2–18.8°C, mild climate but abundant rainfall, especially in April. Common activities: flower viewing, hiking (rain gear recommended). Suggested clothing: light jacket, comfortable long pants, rain gear.
  • Summer (June–August): Average 22.1–27.6°C, hot and humid, occasional showers. Common activities: swimming, surfing, mountain climbing (sun protection recommended). Suggested clothing: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 19.7–16.1°C, comfortable and pleasant climate, decreasing rainfall. Common activities: viewing autumn leaves, hiking, stargazing. Suggested clothing: light jacket or cardigan, long pants.
  • Winter (December–February): Average 8.3–10.6°C, cold and dry, little rainfall. Common activities: onsen bathing, birdwatching, ocean viewing. Suggested clothing: warm jacket, beanie, gloves, scarf.

Izu Oshima climatological average

Annual average temperature: approx. 17.7°C / Annual rainfall: approx. 2774 mm / Summer humidity: 70%–80% / Rainiest month: April

Izu Oshima monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
8.3°C
57
February
8.7°C
206.3
March
12.2°C
274.7
April
16.1°C
351.3
May
18.8°C
271.3
June
22.1°C
335
July
26.6°C
167
August
27.6°C
299
September
25.6°C
295.7
October
19.7°C
265
November
16.1°C
196.3
December
10.6°C
55.7

Izu Oshima weather for the next seven days

12/20
Saturday
Moderate rain
18.6°C/15.3°C
12/21
Sunday
Heavy rain
18.1°C/16.9°C
12/22
Monday
Patchy rain nearby
14.5°C/11.1°C
12/23
Tuesday
Patchy rain nearby
12.6°C/10.3°C
12/24
Wednesday
Moderate rain
18.2°C/12.6°C
12/25
Thursday
Patchy rain nearby
15.5°C/12.7°C
12/26
Friday
Partly Cloudy
11.1°C/10.5°C

Izu Oshima Frequently Asked Questions and Useful Information for Travel

Is Izu Oshima worth visiting?

Izu Oshima offers a unique experience distinct from other parts of Japan. Its remarkable black desert, abundant camellia trees, stunning views of Mt. Fuji, a mysterious crater, and over a century-old town make it a truly worthwhile destination to explore.

How do you get to Izu Oshima?

You can reach Izu Oshima by regular ferry operated by Tokai Kisen. Ferries depart almost daily from Tokyo's Takeshiba Ferry Terminal. The journey takes approximately 6-8 hours one way and offers an overnight travel option from Tokyo to Oshima.

How far is Izu Oshima from Tokyo?

Izu Oshima is situated approximately 120 kilometers (75 miles) from Tokyo. It is the largest of the Izu Islands, covering an area of about 90 square kilometers (35 square miles).

What are the must-see attractions on Izu Oshima?

Must-see attractions on Izu Oshima include its striking black desert, numerous camellia trees that bloom spectacularly, breathtaking views of Mount Fuji, the intriguing volcanic crater, and the charming townscapes that have preserved their historic character for over a century.

What makes Izu Oshima's nature unique?

The nature on Izu Oshima is exceptionally unique due to its volcanic origins, evident in its distinctive black sand beaches and desert-like landscapes. The island is also renowned for its vast number of camellia trees, creating vibrant floral displays, and offers dramatic coastal scenery.