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
5/26
Tuesday
Partly Cloudy
22.7°C/10.3°C
5/27
Wednesday
Partly Cloudy
22.1°C/10.8°C
5/28
Thursday
Heavy rain
18.1°C/12.9°C
5/29
Friday
Moderate rain
16.3°C/9°C
5/30
Saturday
Patchy rain nearby
17.9°C/9.2°C
5/31
Sunday
Sunny
23.6°C/8.6°C
6/1
Monday
Sunny
26.8°C/12°C
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