The autumn leaves were beautiful, the weather was nice, and we completed all the planned itinerary. Our tour guide, Mieko, provided very clear explanations, allowing us to learn a lot about Hokkaido's history. The driver was very steady on the road.
Anonymous user
Solo traveler
Best time to visit Ishikari River
Data source:Meteostat Last updated:2025-09
Weather in Ishikari River throughout the year
Spring (March–May): Average 32–56°F, 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 64–73°F, 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 50–64°F, 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–-40.1°F, cold and dry, with high probability of snowfall. Common activities: skiing, ice activities. Recommended clothing: heavy warm clothing, waterproof and windproof jacket, snow boots.
Weather in Ishikari River
Annual average temperature: approx. 47.1°F / Annual rainfall: approx. 1198 mm / Summer humidity: 70%–80% / Rainiest month: August
Ishikari River weather by month
Month
Temperature (°F)
Rainfall (mm)
January
19°F
66.7
February
21.6°F
47.3
March
32.7°F
51
April
46.4°F
49.3
May
56.1°F
70.3
June
64.4°F
121.7
July
73°F
142.7
August
73.8°F
186
September
64.6°F
120.7
October
50.9°F
120.7
November
39.2°F
115.3
December
23.9°F
106.3
7-day weather forecast for Ishikari River
11/14
Saturday
Partly Cloudy
47°F/28.7°F
11/15
Sunday
Cloudy
44.3°F/28.3°F
11/16
Monday
Light sleet
38.7°F/28.7°F
11/17
Tuesday
Partly Cloudy
36.5°F/23.8°F
11/18
Wednesday
Overcast
43.7°F/24.8°F
11/19
Thursday
Light drizzle
42.3°F/31.6°F
11/20
Friday
Heavy snow
31.6°F/26.4°F
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