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Ishikari River

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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

9/17
Thursday
Overcast
23.1°C/12.9°C
9/18
Friday
Sunny
23.4°C/13.1°C
9/19
Saturday
Overcast
21.5°C/11.7°C
9/20
Sunday
Overcast
21.4°C/16°C
9/21
Monday
Patchy rain nearby
23.7°C/14.2°C
9/22
Tuesday
Sunny
16.6°C/9.8°C
9/23
Wednesday
Sunny
17.6°C/9.8°C

Ishikari River Frequently Asked Questions and Useful Information for Travel

Where is the Ishikari River located?

The Ishikari River is located on the Japanese island of Hokkaido. It originates in the Taisetsu Mountains, specifically Mount Ishikari, and flows through central and western Hokkaido, passing through major cities like Sapporo and Asahikawa before emptying into the Sea of Japan near the city of Ishikari.

What is the meaning of 'Ishikari'?

The most common translation of 'Ishikari' is 'a greatly wandering river'. This interpretation is proposed to stem from the Ainu phrase 'i-sikar-pet' or 'ishikaripet', referring to the river's meandering course.

What are the main cities the Ishikari River flows through?

The Ishikari River flows through several significant cities in Hokkaido, Japan, including Sapporo and Asahikawa. Its course is central to the geography and development of the island.

Where does the Ishikari River originate and where does it end?

The Ishikari River originates in the Taisetsu Mountains, with its source being Mount Ishikari. It empties into the Sea of Japan, near the city of Ishikari.

What geographical features are associated with the Ishikari River?

The Ishikari River is closely associated with the Taisetsu Mountain range, where it originates. Its course traverses the island of Hokkaido, a significant geographical feature of Japan, before reaching the Sea of Japan.