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Lake Kussharo

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Lake Kussharo Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Lake Kussharo year round climate

  • Spring (March–May): Average -0.9–11.9°C, cold climate, gradually warming, occasional snowfall. Common activities: snow viewing (early March), hiking (late May). Recommended clothing: warm jacket, beanie, gloves, scarf, waterproof jacket.
  • Summer (June–August): Average 15.7–21.9°C, warm and humid climate, more rainfall, especially in August. Common activities: camping, hiking, boating. Recommended clothing: light and breathable clothing, rain gear.
  • Autumn (September–November): Average 11.1–18.5°C, cool climate, rainfall gradually decreasing. Common activities: viewing autumn leaves, hiking. Recommended clothing: comfortable warm jacket, long-sleeved clothing.
  • Winter (December–February): Average -7.6–-0.9°C, cold climate, heavy snowfall. Common activities: skiing, snow activities. Recommended clothing: heavy warm clothing, waterproof jacket, snow boots.

Lake Kussharo climatological average

Annual average temperature: approx. 6.8°C / Annual rainfall: approx. 999 mm / Summer humidity: 70%–80% / Rainiest month: August

Lake Kussharo monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-7.6°C
71
February
-7.2°C
39.5
March
-0.9°C
58.2
April
7.2°C
67.4
May
11.9°C
59.5
June
15.7°C
84.5
July
20.7°C
113.3
August
21.9°C
155.3
September
18.5°C
128.6
October
11.1°C
96.8
November
4.2°C
60.3
December
-4.3°C
65.1

Lake Kussharo weather for the next seven days

5/26
Tuesday
Patchy rain nearby
21.3°C/10.2°C
5/27
Wednesday
Patchy rain nearby
21.4°C/11.3°C
5/28
Thursday
Moderate rain
18.3°C/11.1°C
5/29
Friday
Moderate rain
16.3°C/7.6°C
5/30
Saturday
Patchy rain nearby
13.3°C/6.4°C
5/31
Sunday
Sunny
13°C/4.8°C
6/1
Monday
Sunny
27.5°C/8.4°C

Lake Kussharo Frequently Asked Questions and Useful Information for Travel

What are some activities to enjoy at Lake Kussharo?

At Lake Kussharo, you can experience the source of the Kushiro River with a canoe or boat tour. Other popular activities include SUP cruising, trekking through scenic trails, wildlife watching for local fauna, and enjoying a relaxing hot spring experience.

Can you swim in Lake Kussharo?

Yes, you can swim in Lake Kussharo during the summer months. Visitors can also enjoy camping. In winter, the lake becomes a sanctuary for whooper swans migrating from Siberia, drawn by geothermal activity. Sunayu is a prime location for photographers to capture the swans against snowy landscapes.

What wildlife can be seen at Lake Kussharo?

Lake Kussharo is a renowned spot for wildlife watching, particularly famous for the large colony of whooper swans that migrate here from Siberia during the winter. You may also spot other local fauna as you explore the surrounding natural beauty.

What is the best way to experience the Kushiro River source at Lake Kussharo?

To experience the source of the Kushiro River at Lake Kussharo, you can take a leisurely tour by canoe or boat, offering a unique perspective of this natural wonder and its surroundings.

Are there any unique geological features at Lake Kussharo?

Lake Kussharo is known for its geothermal activity, which contributes to the unique environment. This activity not only attracts wildlife like the migrating whooper swans in winter but also creates warm areas, making it a fascinating natural destination.