Hachimantai Iwate Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Hachimantai Iwate year round climate
Spring (March–May): Average 39–60°F, mild climate, but still chilly in early spring, rainfall gradually increases. Common activities: Hiking, flower viewing (some species). Recommended clothing: Warm jacket, long-sleeved clothing, and umbrella.
Summer (June–August): Average 68–78°F, high temperature, high humidity, heavy rainfall, especially in August. Common activities: Mountain hiking, summer retreat. Recommended clothing: Light and breathable clothing, rain gear, and sunscreen.
Autumn (September–November): Average 45–71°F, comfortable temperature, decreased rainfall, crisp autumn weather. Common activities: Maple viewing, hiking. Recommended clothing: Light jacket, long-sleeved clothing.
Winter (December–February): Average -33–39°F, cold temperature, snowfall may occur, relatively low rainfall. Common activities: Skiing, snow viewing (depending on snowfall). Recommended clothing: Thick warm clothing, waterproof jacket, snow boots.
Hachimantai Iwate climatological average
Annual average temperature: approx. 53.6°F / Annual rainfall: approx. 1443 mm / Summer humidity: 70%–80% / Rainiest month: August
Hachimantai Iwate monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
30.2°F
41
February
31.8°F
44
March
39.9°F
108.3
April
52.7°F
84.7
May
60.1°F
85.7
June
68.4°F
122.7
July
76.3°F
273
August
78.6°F
305.3
September
71.1°F
156.3
October
56.5°F
71.3
November
45.9°F
76.7
December
33.8°F
74.3
Hachimantai Iwate weather for the next seven days
12/21
Sunday
Moderate rain
53.4°F/34.1°F
12/22
Monday
Light freezing rain
34.6°F/29°F
12/23
Tuesday
Sunny
37°F/27.7°F
12/24
Wednesday
Moderate rain
41.2°F/32°F
12/25
Thursday
Overcast
40.5°F/36°F
12/26
Friday
Moderate or heavy snow showers
36.3°F/24.9°F
12/27
Saturday
Patchy light snow
30.1°F/24.6°F
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