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Shiroko River

Travel guide

Best time to visit Shiroko River

Data source:Meteostat
Last updated:2025-09

Weather in Shiroko River throughout the year

  • Spring (March–May): Average 0.9–10°C, cold and humid climate, occasional snowfall, but increasing sunshine hours. Common activities: Birdwatching, walking in Kushiro Marsh (dress warmly). Recommended clothing: Thick jacket, thermal underwear, waterproof pants and shoes.
  • Summer (June–August): Average 14.4–20.8°C, warm and humid climate, more rainfall, especially in August. Common activities: Boating on the Kushiro River, sightseeing around Lake Akan, flower viewing. Recommended clothing: Light and breathable clothing, rain gear, insect repellent.
  • Autumn (September–November): Average 12.5–18.4°C, cool and pleasant climate, gradually decreasing rainfall, beautiful scenery. Common activities: Maple viewing, watching migratory birds, experiencing local culture. Recommended clothing: Light jacket, comfortable long pants, thermal underwear.
  • Winter (December–February): Average -4.7–-2°C, cold and dry climate, more snowfall. Common activities: Skiing, ice fishing, enjoying snow scenery. Recommended clothing: Heavy down jacket, warm hat, gloves, scarf, waterproof snow boots.

Weather in Shiroko River

Annual average temperature: approx. 8°C / Annual rainfall: approx. 1059 mm / Summer humidity: 70%–80% / Rainiest month: August

Shiroko River weather by month

Month
Temperature (°C)
Rainfall (mm)
January
-4.7°C
27
February
-4.5°C
19
March
0.9°C
76.7
April
6.5°C
88.7
May
10°C
73
June
14.4°C
98.3
July
19.7°C
144.3
August
20.8°C
206
September
18.4°C
125.3
October
12.5°C
110.7
November
6.5°C
55.3
December
-2°C
35

7-day weather forecast for Shiroko River

11/2
Monday
Patchy rain nearby
6.9°C/1.1°C
11/3
Tuesday
Sunny
9.1°C/2.2°C
11/4
Wednesday
Sunny
9.6°C/2.7°C
11/5
Thursday
Light drizzle
12.5°C/1.1°C
11/6
Friday
Sunny
14.5°C/6.4°C
11/7
Saturday
Sunny
7.8°C/1.6°C
11/8
Sunday
Sunny
3.4°C/0.7°C