Oasahi Shelter
大朝日岳山頂避難小屋
1,779 m · Nishikawa, Yamagata · 0.3 km from the summit of Ō-Asahidake
An emergency shelter at about 1,777 m, roughly ten minutes below the summit of Mount Oasahi, the highest peak of the Asahi Range. The standard ascent from the Koderakosen trailhead takes about six hours to the summit. The hut has no meals or bedding, and is staffed from summer into autumn.
2026: open June 15–October 15 · sleeps 100
Website: ooasahi.jimdofree.com ／ Phone 0237-62-2111
Prices (2026)
- Overnight-stay contribution
- ¥2,000
- Toilet use contribution
- ¥100
Oasahi Shelter weather (hourly, 14 days)
Sunrise today 06:08, sunset 16:40
| 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 | 21 | 23 | 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 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 | 12 | 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 | 21 | |
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| Temperature | °C | -3° | -3° | -3° | -3° | -2° | 0° | 4° | 6° | 7° | 5° | 1° | 1° | 1° | 1° | 2° | 3° | 4° | 6° | 7° | 5° | 4° | 5° | 5° | 5° | 5° | 6° | 4° | 3° | 1° | -2° | -3° | -4° | -4° | -3° | -4° | -5° | -5° | -5° | -5° | -5° | -3° | -3° | -3° | -5° | -5° | -5° | -6° | -6° | -4° | -1° | -1° | -5° | -8° | -2° | 0° | -3° | -4° | -3° | -2° | -3° | -4° | -2° | -1° | -3° | -2° | -2° | -3° | -4° | -5° | -1° | 3° | -3° | -3° | 5° | 7° | 2° | 3° | 5° | 0° | -5° | -5° | -3° | -1° | -6° |
| Precipitation | mm | 4.7 | 9 | 3.0 | 0.1 | 0.6 | 1.5 | 4.4 | 3.1 | 1.9 | 2.2 | 3.4 | 3.6 | 6 | 4.7 | 3.9 | 4.7 | 2.1 | 1.6 | 1.4 | 1.7 | 1.3 | 1.0 | 0.6 | 0.2 | 0.1 | 0.7 | 1.0 | 0.5 | 0.1 | 1.9 | 9 | 3.2 | 0.3 | 0.8 | 0.2 | 0.6 | 1.8 | 0.7 | 5 | 2.5 | 0.1 | 0.1 | 3.1 | 8 | 3.8 | 3.5 | 2.3 | 0.2 | ||||||||||||||||||||||||||||||||||||
| New snow | cm | <.1 | 2.8 | 3.0 | 4.2 | 1.9 | 1.5 | 1.3 | 1.6 | 1.3 | 1.0 | 0.5 | 0.2 | 0.1 | <.1 | <.1 | <.1 | 0.7 | 1.0 | 0.4 | <.1 | <.1 | 0.6 | 3.5 | 2.9 | <.1 | 0.1 | <.1 | 0.2 | <.1 | 0.1 | 0.2 | 0.2 | <.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 | 1 | 3 | 5 | 7 | 7 | 8 | 9 | 11 | 12 | 12 | 13 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 9 | 9 | 9 | 9 | 7 | 7 | 8 | 10 | 7 | 6 | 6 | 5 | 3 | 3 | 3 | 2 | <1 | 1 | 1 | <1 | <1 | <1 | <1 | <1 | <1 | 0 | 0 | 0 | 0 | 0 | <1 | <1 | 0 | 0 |
| Wind | m/s | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 1 | 2 | 0 | 2 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 1 | 2 | 2 | 4 | 6 | 5 | 5 | 4 | 4 | 4 | 5 | 4 | 6 | 5 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 5 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 3 | 4 | 3 | 2 | 2 | 2 | 1 | 2 | 5 | 5 | 3 | 2 | 2 | 1 | 0 | 2 | 2 | 1 | 1 | 1 | 2 | 6 | 5 | 4 | 3 | 2 | 0 |
| Wind gusts | m/s | 7 | 7 | 6 | 7 | 7 | 6 | 8 | 9 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 6 | 7 | 9 | 6 | 4 | 4 | 5 | 8 | 9 | 14 | 18 | 19 | 17 | 17 | 15 | 14 | 15 | 16 | 20 | 22 | 23 | 20 | 17 | 18 | 18 | 19 | 18 | 17 | 14 | 8 | 6 | 6 | 6 | 6 | 5 | 5 | 7 | 6 | 6 | 9 | 11 | 12 | 10 | 15 | 14 | 9 | 7 | 9 | 7 | 10 | 14 | 16 | 15 | 10 | 8 | 8 | 4 | 6 | 7 | 8 | 7 | 7 | 8 | 19 | 20 | 15 | 11 | 8 | 6 |
| Wind dir. | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | |
Facilities and rooms
- Open
- 2026: open all year
- Winter
- Part of the hut is open as an emergency shelter in winter
- Bedding
- bring a sleeping bag
- Water
- No tap water inside hut. Kingyokusui about 15 min away; Gingyokusui toward Koderakosen
- Toilet
- Inside hut; eco-friendly low-flush toilets. Only 1 cubicle available in winter
- Self-catering
- Stoves allowed on designated stainless-steel plates
- Location
- 38.263204, 139.921312