Mount Tomuraushi (Daisetsuzan) Mountain

Alpine peak in Daisetsuzan National Park, rugged terrain

Inside Daisetsuzan National Park, Mount Tomuraushi attracts multi-day hikers to alpine terrain, tundra vegetation and seasonal flower displays; routes demand navigation and snow skills outside summer, with highland vistas of Hokkaido.

Main image
Mount Tomurashi from Mount Ishikari.jpg
Mount Tomuraushi from Mount Nipesotsu.jpg
Mount Tomuraushi Rock Garden.jpg
Tomuraushi and Kitanuma 2006-8-26.jpg
Tomurausi.jpg
オプタテシケよりトムラウシを臨む - panoramio.jpg
オプタテシケよりトムラウシ方面を望む - panoramio.jpg
コスマヌプリより黄金ヶ原トムラウシ方面を望む - panoramio.jpg

Mount Tomuraushi (Daisetsuzan) at a Glance#

About Mount Tomuraushi (Daisetsuzan)#

Mount Tomuraushi is a mountain in central Hokkaido, Japan, located within Daisetsuzan National Park. It is one of several prominent peaks in the Daisetsuzan range and is known for alpine terrain and scenic hiking routes.

Hikers follow marked routes that cross alpine ridges and scree slopes, with summits offering wide views across the national park. The area is used for summer hiking and alpine trekking; snow and glacial remnants affect conditions outside the summer months.

The mountain is part of the volcanic and uplifted geology of central Hokkaido and sits within the protected area of the national park, which preserves alpine ecosystems. Trail management and mountain safety information are provided by park authorities for seasonal conditions.

Geographically it lies in central Hokkaido inside Daisetsuzan National Park, within the island’s mountainous interior. The nearest larger towns serve as staging points for park access and trailheads.

  • Alpine environment: Located inside Daisetsuzan National Park, the mountain is part of a large alpine area noted for tundra vegetation and seasonal wildflowers.

Tips for Visiting Mount Tomuraushi (Daisetsuzan)#

  • Plan climbs in mid‑summer (July-August) when the access trails are most stable and the Tomuraushi Hut (goâ) is open - start pre‑dawn to beat afternoon storms and give yourself daylight for the long approach.
  • Use the Tomuraushi hut as your staging point and book it in advance during peak season; the route passes extensive boggy sections and indistinct tracks that are easier to manage with a planned overnight stop.
  • Treat Daisetsuzan as true alpine country: make noise and be bear‑aware (brown bears occur on Hokkaido), carry basic bear‑avoidance items, and expect rapidly changing weather that many day visitors underestimate.

Best Time to Visit Mount Tomuraushi (Daisetsuzan)#

The short alpine summer (July-September) is the best window for hiking Mount Tomuraushi when snow is at its minimum.

Alpine summer / Best time to hike
Jul-Sep · 0-15°C
Snow-free to patchy conditions in many areas, the main season for hiking and alpine access.
Shoulder season / Early autumn
Oct · -5-10°C
Cooler, possibility of early snow and rapidly changing conditions - good for experienced hikers watching forecasts.
Winter and spring
Nov-Jun · -20-0°C
Long, cold snow season with deep snowpack; suitable only for experienced winter mountaineering and ski tours.

Weather & Climate near Mount Tomuraushi (Daisetsuzan)#

Climate

Mount Tomuraushi (Daisetsuzan)'s climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -17°C to 19°C. Abundant rainfall (1336 mm/year), wettest in September.

Air Quality: AQI 42 Good
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
33°
Warmest Month
-27°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -17° - -8° -20° 67 mm overcast 96% 3.9 m/s 0.2 low 9.3h
February Poor -17° - -7° -19° 56 mm overcast 95% 3.9 m/s 0.3 low 10.4h
March Poor -13° - -4° -15° 86 mm overcast 92% 4.2 m/s 0.6 moderate 11.8h
April Poor -5° - 3° -6° 94 mm overcast 85% 4.5 m/s 0.9 moderate 13.2h
May Acceptable 1° - 9° 2° 112 mm overcast 82% 4.0 m/s 1.2 high 14.4h
June Acceptable 6° - 14° 8° 107 mm overcast 84% 3.3 m/s 1.4 high 15.1h
July Acceptable 11° - 18° 14° 140 mm overcast 87% 3.0 m/s 1.4 high 14.8h
August Acceptable 12° - 19° 15° 175 mm overcast 87% 3.1 m/s 1.3 high 13.7h
September Poor 7° - 14° 11° 178 mm overcast 87% 3.2 m/s 1.0 high 12.3h
October Acceptable 0° - 9° 1° 131 mm partly cloudy 87% 3.7 m/s 0.6 moderate 10.9h
November Poor -6° - 2° -7° 113 mm overcast 91% 4.1 m/s 0.2 low 9.6h
December Poor -12° - -4° -15° 77 mm overcast 95% 3.9 m/s 0.1 low 9.0h