Mt. Koakaishidake
小赤石岳
Shizuoka, Shizuoka / Ōshika-mura, Nagano · Elevation 3,081 m
Mount Koakaishi (3,081 m) lies on the border of Oshika Village (Shimoina District, Nagano) and Aoi Ward (Shizuoka City) on the main ridge of the Akaishi Range (Southern Japan Alps), about 0.7 km north-northeast of Mount Akaishi as its forepeak. It is the high point of the traverse between Mount Arakawa / Daishōji-daira and Mount Akaishi and lies within Minami Alps National Park and the Minami Alps UNESCO Biosphere Reserve. It is listed in Japan's 642 Peaks Above 2,000 m.
Mt. Koakaishidake at a glance
- Weather: The most settled day in the next 7 days is Sun, November 8: clear, gusts up to 9 m/s.
Mt. Koakaishidake weather (hourly, 14 days)
Sunrise today 06:10, sunset 16:52
| Tue, 11/3 | Wed, 11/4 | Thu, 11/5 | Fri, 11/6 | Sat, 11/7 | Sun, 11/8 | Mon, 11/9 | Tue, 11/10 | Wed, 11/11 | Thu, 11/12 | Fri, 11/13 | Sat, 11/14 | Sun, 11/15 | Mon, 11/16 | Tue, 11/17 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Japan time | 15 | 17 | 19 | 21 | 23 | 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 18 | 21 | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 0 | 3 | 6 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | 21 | 3 | 9 | 15 | |
| Temperature | °C | 3° | -3° | -5° | -7° | -7° | -6° | -6° | -5° | -3° | 1° | 4° | 3° | 2° | 0° | 0° | 0° | 0° | 2° | 4° | 7° | 4° | 1° | 0° | 0° | 0° | -1° | 2° | 6° | 4° | -3° | -5° | -7° | -9° | -11° | -4° | -1° | -2° | -10° | -11° | -11° | -9° | -8° | 1° | 2° | 1° | -5° | -5° | -4° | -5° | -5° | -1° | 0° | -8° | -9° | -3° | -2° | -6° | -10° | -5° | -2° | -9° | -9° | -3° | -2° | -9° | -9° | -2° | 0° | -8° | -8° | -1° | 0° | -8° | -6° | 0° | 0° | -1° | 0° | 3° | 4° | -5° | -3° | -2° | -1° |
| Precipitation | mm | 0.2 | 0.4 | 1.1 | 0.2 | 7 | 11 | 6 | 0.6 | 0.3 | 1.6 | 0.5 | 0.8 | 1.3 | 0.1 | 0.3 | 0.4 | 16 | 22 | 0.9 | 0.5 | 0.3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| New snow | cm | <.1 | <.1 | <.1 | 0.3 | <.1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Snow depth | cm | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind | m/s | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 0 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 0 | 0 | 1 | 3 | 2 | 5 | 4 | 2 | 0 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 0 | 0 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 3 | 3 | 0 | 1 | 1 | 2 |
| Wind gusts | m/s | 10 | 10 | 6 | 5 | 5 | 6 | 5 | 6 | 6 | 7 | 10 | 10 | 8 | 9 | 10 | 14 | 14 | 13 | 8 | 9 | 11 | 12 | 8 | 10 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 13 | 10 | 10 | 9 | 9 | 9 | 8 | 9 | 9 | 7 | 7 | 8 | 9 | 9 | 10 | 12 | 8 | 7 | 9 | 14 | 13 | 21 | 22 | 18 | 10 | 6 | 9 | 10 | 8 | 7 | 12 | 12 | 8 | 6 | 6 | 9 | 9 | 7 | 9 | 13 | 15 | 15 | 13 | 15 | 11 | 6 | 5 | 8 |
| Wind dir. | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | |
Huts, campsites and lodging near Mt. Koakaishidake
Mountain huts
- Mount Akaishi Emergency Shelter 2026: open July 11–September 22 · reservation required · sleeps 10
- Arakawa Hut 2026: open July 11–October 11 · reservation required · sleeps 50
- 赤石小屋 2026: open July 11–October 11 · reservation required · sleeps 50
- Hirogawara Hut unstaffed
- Arakawa Nakadake Evacuation Hut 2026: open July 11–September 22 · sleeps 5
Campsites
- Arakawa Hut Campsite
- Hyakkenbora Campsite
Mt. Koakaishidake facts
- Elevation
- 3,081 m
- Location
- Shizuoka, Shizuoka / Ōshika-mura, Nagano
35.467399, 138.160232 - National Park
- 南アルプス国立公園
- Trail Map
- www.gsi.go.jp
- Access Information
- www.vill.ooshika.nagano.jp