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Mount Iwaki

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Mount Iwaki Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Mount Iwaki year round climate

  • Spring (March–May): 4.6–14.4°C on average. The climate gradually warms up, but it remains relatively humid with relatively high rainfall. Common activities: mountain hiking (please pay attention to trail conditions), enjoying the early spring scenery in the mountains. Recommended clothing: warm jacket, comfortable and breathable trousers, waterproof jacket.
  • Summer (June–August): 18.9–25.4°C on average. Higher temperatures, especially in August, which has the most rainfall and higher humidity. Common activities: summer resort, activities near mountain streams. Recommended clothing: light and breathable clothing, rain gear, sunscreen.
  • Autumn (September–November): 9.2–21.4°C on average. Pleasant and comfortable climate, with colorful autumn leaves as the main attraction. Common activities: viewing autumn leaves, mountain hiking. Recommended clothing: light jacket, comfortable trousers.
  • Winter (December–February): 0.7–2.7°C on average. Cold temperatures, higher chance of snowfall. Common activities: skiing, viewing snow scenes (please check snow conditions). Recommended clothing: thick warm clothing, waterproof jacket, snow boots.

Mount Iwaki climatological average

Annual average temperature: approx. 11.8°C / Annual rainfall: approx. 2175 mm / Summer humidity: 70%–80% / Rainiest month: August

Mount Iwaki monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.7°C
188.8
February
0.9°C
85.8
March
4.6°C
117.9
April
10.4°C
93.9
May
14.4°C
139.1
June
18.9°C
142.2
July
23.2°C
155.6
August
25.4°C
431.4
September
21.4°C
226.7
October
14.6°C
211.4
November
9.2°C
210.3
December
2.7°C
172.1

Mount Iwaki weather for the next seven days

5/8
Friday
Moderate rain
18.9°C/10°C
5/9
Saturday
Patchy rain nearby
10.9°C/3.7°C
5/10
Sunday
Sunny
18.8°C/3.7°C
5/11
Monday
Sunny
20.2°C/6.8°C
5/12
Tuesday
Sunny
21°C/7.9°C
5/13
Wednesday
Partly Cloudy
22.6°C/8.4°C
5/14
Thursday
Sunny
24.1°C/10.5°C

Mount Iwaki Frequently Asked Questions and Useful Information for Travel

How long does it take to hike Mount Iwaki?

The Yayoi Trail on Mount Iwaki is an out-and-back trail covering 6.6 miles with an elevation gain of 4,422 feet. Completing this hike typically takes about 7 to 7.5 hours.

Is Mount Iwaki an active volcano?

Mount Iwaki has been active frequently in historic times, with its summit crater being two kilometers wide. It features three lava domes on its western and southern flanks and experienced very frequent activity consisting mostly of small to moderate phreatic explosions during the Edo period.

What is special about Mount Iwaki?

Mount Iwaki, the highest peak in Aomori, is affectionately called Tsugaru Fuji due to its beautiful conical shape. It holds deep spiritual significance for the local people and has long been an object of worship.

What animals can be found on Mount Iwaki?

Researchers have identified several animal species on Mount Iwaki, including Golden Eagles, Japanese crayfish (Zarigani), and the Black Woodpecker.

What is the best time to visit Mount Iwaki for hiking?

The best time to visit Mount Iwaki for hiking is generally from late spring to autumn. During these seasons, trails are typically clear of snow, and the weather is more conducive for outdoor activities, offering spectacular views of the surrounding landscape.