Shiroishi Ward Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Shiroishi Ward year round climate
Spring (March–May): Average 2.8–14.3°C, the climate transitions from cold to mild. Temperatures rise from March to May, but significant temperature differences remain. Common activities: Picnics, flower viewing (e.g., cherry blossoms, depending on blooming conditions). Recommended clothing: Warm jacket, sweater, long pants; light jacket when sunny.
Summer (June–August): Average 18.4–24.7°C, the climate is warm and humid with relatively high rainfall, particularly in August. Common activities: Hiking, stream activities, visiting summer resorts. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): Average 13.2–20.4°C, the climate is comfortable and pleasant, but rainfall remains relatively high, and temperatures begin to drop. Common activities: Maple leaf viewing (depending on leaf conditions), hiking. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -3.1–-1.3°C, the climate is cold and dry with a higher probability of snowfall; pay attention to keeping warm. Common activities: Skiing, onsen experiences (depending on snow conditions). Recommended clothing: Heavy warm clothing, snow boots, hat, scarf, and gloves.
Shiroishi Ward climatological average
Annual average temperature: approx. 10.5°C / Annual rainfall: approx. 1083 mm / Summer humidity: 70%–80% / Rainiest month: August
Shiroishi Ward monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-3.1°C
132
February
-2.3°C
111
March
2.8°C
53
April
9.6°C
37
May
14.3°C
43
June
18.4°C
81
July
23.4°C
89.7
August
24.7°C
135.3
September
20.4°C
103
October
13.2°C
109.7
November
6.6°C
114.7
December
-1.3°C
73.7
Shiroishi Ward weather for the next seven days
1/14
Wednesday
Blizzard
-7.6°C/-9.9°C
1/15
Thursday
Light snow
-2.3°C/-11.2°C
1/16
Friday
Moderate or heavy snow showers
-1.3°C/-11.1°C
1/17
Saturday
Light snow showers
-1.7°C/-9.8°C
1/18
Sunday
Light snow showers
-1.9°C/-10.3°C
1/19
Monday
Light freezing rain
-1.7°C/-10.6°C
1/20
Tuesday
Patchy moderate snow
-7.5°C/-11.9°C
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