Ishikari River Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Ishikari River year round climate
Spring (March–May): Average 0.4–13.4°C, with fluctuating temperatures and relatively even rainfall distribution. Common activities: flower viewing, hiking, boating (depending on snowmelt). Recommended clothing: warm jacket, sweater, waterproof jacket.
Summer (June–August): Average 18.0–23.2°C, warm and humid, with higher rainfall, especially in August. Common activities: camping, fishing, water sports. Recommended clothing: light and breathable clothing, rain gear.
Autumn (September–November): Average 10.5–18.1°C, cool and with relatively high rainfall. Common activities: maple leaf viewing, fruit picking. Recommended clothing: light jacket, long-sleeved clothing.
Winter (December–February): Average -7.2–-4.5°C, cold and dry, with high probability of snowfall. Common activities: skiing, ice activities. Recommended clothing: heavy warm clothing, waterproof and windproof jacket, snow boots.
Ishikari River climatological average
Annual average temperature: approx. 8.4°C / Annual rainfall: approx. 1198 mm / Summer humidity: 70%–80% / Rainiest month: August
Ishikari River monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-7.2°C
66.7
February
-5.8°C
47.3
March
0.4°C
51
April
8°C
49.3
May
13.4°C
70.3
June
18°C
121.7
July
22.8°C
142.7
August
23.2°C
186
September
18.1°C
120.7
October
10.5°C
120.7
November
4°C
115.3
December
-4.5°C
106.3
Ishikari River weather for the next seven days
3/2
Monday
Light freezing rain
-0.3°C/-9°C
3/3
Tuesday
Light freezing rain
0.1°C/-9.9°C
3/4
Wednesday
Moderate snow
1.1°C/-5.3°C
3/5
Thursday
Heavy snow
1.6°C/-3°C
3/6
Friday
Partly Cloudy
3.4°C/-5.4°C
3/7
Saturday
Light freezing rain
2.9°C/-2.5°C
3/8
Sunday
Patchy rain nearby
4.9°C/0.9°C
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