If you come in mid-September and the autumn leaves aren't yet in bloom, the Red Cross suggests waiting a bit longer. Alternatively, KKDay can check the autumn leaf conditions first before deciding whether to list their products or start booking the trip.
I happened to see a flyer at my accommodation, so I went there after dinner. It's a bit of a distance from the hot spring town. The shuttle bus only goes there once and seems to be a shuttle service. There are only illuminations here and there, but they move in various ways in response to people and umbrellas, which is interesting.
In early autumn, ascending the Kurodake Ropeway in Hokkaido, the magnificent Sounkyo Gorge intertwines with the scattered autumn leaves, creating a breathtaking natural spectacle. Riding the ropeway through the mountains and clouds, the crisp, fresh air is invigorating, allowing you to deeply experience the grandeur and tranquility of autumn in northern Japan – a truly worthwhile mountain scenery experience!
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Sounkyo Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Sounkyo year round climate
Spring (March–May): Average -1.2–12.2°C, cold climate gradually warming, rainfall increasing. Common activities: mountain hiking (beware of changing weather), appreciating post-snowmelt scenery. Recommended clothing: warm jacket, sweater, waterproof jacket, waterproof pants.
Summer (June–August): Average 16.8–22.1°C, warm and humid climate, more rainfall, especially in August. Common activities: canyoning, boating, appreciating the magnificent scenery of Daisetsuzan National Park's Sounkyo Gorge. Recommended clothing: light and breathable clothing, rain gear, sunscreen.
Autumn (September–November): Average 9.6–16.9°C, cool and comfortable climate, decreasing rainfall. Common activities: autumn leaves viewing (depending on the foliage change time), hiking. Recommended clothing: light jacket, long-sleeved clothing.
Winter (December–February): Average -8.4–-1.2°C, cold and dry climate, high possibility of snowfall. Common activities: skiing, snowshoeing (pay attention to safety). Recommended clothing: warm clothing, waterproof jacket, snow boots, hat, gloves, scarf.
Sounkyo climatological average
Annual average temperature: approx. 7.2°C / Annual rainfall: approx. 1426 mm / Summer humidity: 70%–80% / Rainiest month: August
Sounkyo monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-8.4°C
58.4
February
-7.1°C
48.7
March
-1.2°C
65.6
April
7°C
70.7
May
12.2°C
88.9
June
16.8°C
175.4
July
21.4°C
144.5
August
22.1°C
250.6
September
16.9°C
179.5
October
9.6°C
144.3
November
3.1°C
117.6
December
-5.7°C
82.3
Sounkyo weather for the next seven days
10/3
Saturday
Patchy rain nearby
12.3°C/8.1°C
10/4
Sunday
Patchy rain nearby
13.1°C/7.3°C
10/5
Monday
Overcast
16.1°C/6.2°C
10/6
Tuesday
Light rain shower
16.1°C/11.3°C
10/7
Wednesday
Patchy rain nearby
15.5°C/8.6°C
10/8
Thursday
Sunny
15.8°C/7.8°C
10/9
Friday
Sunny
18°C/9.9°C
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