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Owakudani

Owakudani 1
Travel guide
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Travel guide

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Best time to visit Owakudani

Data source：Meteostat
Last updated：2025-09

Weather in Owakudani throughout the year

  • Spring (March–May): Average 11.8–18.9°C, mild but rainy, especially in April. Common activities: Hiking (be aware of weather changes), onsen experience. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 22.8–27.9°C, hot and humid, frequent rainfall from June to August, pay attention to sun protection and rain. Common activities: Onsen, enjoying volcanic views. Recommended clothing: Light and breathable clothing, rain gear, hat.
  • Autumn (September–November): Average 19.0–26.1°C, comfortable climate, rainfall gradually decreases. Common activities: Hiking, viewing autumn leaves (in some areas). Recommended clothing: Comfortable long-sleeved clothing, light jacket.
  • Winter (December–February): Average 6.2–8.4°C, low temperature, dry. Common activities: Onsen experience, enjoying winter scenery. Recommended clothing: Warm clothing, thick jacket, scarf, gloves.

Weather in Owakudani

Annual average temperature: approx. 17°C / Annual rainfall: approx. 2182 mm / Summer humidity: 70%–80% / Rainiest month: June

Owakudani weather by month

Month
Temperature (°C)
Rainfall (mm)
January
6.2°C
43.1
February
7.5°C
109.2
March
11.8°C
191.3
April
16.2°C
234
May
18.9°C
262.2
June
22.8°C
346.2
July
27.9°C
198.4
August
27.9°C
227.1
September
26.1°C
242.3
October
19°C
152.5
November
14.7°C
137.1
December
8.4°C
38.8

7-day weather forecast for Owakudani

11/9
Monday
Patchy rain nearby
15°C/11.6°C
11/10
Tuesday
Light drizzle
12.9°C/10.1°C
11/11
Wednesday
Sunny
13°C/8.5°C
11/12
Thursday
Sunny
17.5°C/8.8°C
11/13
Friday
Overcast
18.5°C/11.1°C
11/14
Saturday
Partly Cloudy
17.9°C/11.4°C
11/15
Sunday
Light drizzle
17.3°C/13.6°C

Owakudani travel FAQs and useful info

What is Owakudani known for?

Owakudani is one of the most famous viewpoints in Hakone, where you can observe intense volcanic activity up close. This volcanic valley was formed by a phreatic eruption and pyroclastic flow that occurred almost 3000 years ago.

Why are Owakudani eggs black?

The famous Kurotamago, or black eggs, are a unique delicacy of Owakudani. These are raw eggs boiled in the hot springs at eighty degrees Celsius for 1 hour. The iron from the spring water adheres to the shell, and when it reacts with hydrogen sulfide, it creates the distinctive black coating.

Is Owakudani worth visiting?

Owakudani is a highly recommended spot for experiencing Japan's volcanic activity up close. From its powerful fumarole area and famous black eggs to the scenic ropeway and surrounding tourist attractions, Owakudani offers a full day of unique experiences.

Is Owakudani an active volcano?

Yes, Owakudani is a volcanic valley with active sulfur vents and hot springs. It is the result of a volcanic eruption that occurred over 3,000 years ago, and this geological activity is a primary draw for visitors.

What geological event formed Owakudani?

Owakudani was formed by a significant phreatic eruption and pyroclastic flow that took place approximately 3,000 years ago, shaping the landscape into the active volcanic valley seen today.