Yokoosanso
横尾山荘
1,620 m · Matsumoto, Nagano · 2.2 km from the summit of Choyari
A staffed mountain lodge at about 1,618m beside the Azusa River at Yokoo in inner Kamikochi, where Yarisawa and Yokoo Valley meet. It is roughly a three-hour walk on a mostly level path from Kappa Bridge and stands at the route junction for the Yari-Hotaka range, Chogatake and Jonendake. Accommodation is in curtained bunk dormitories, with a guest-only bath and drying room.
2026: open April 27–November 3 · reservation required · sleeps 150
Book: www.yokoo-sanso.co.jp ／ Website: www.yokoo-sanso.co.jp ／ Phone 0263-95-2421
Prices (2026)
- 1 night with dinner and breakfast
- ¥15,600
- 1 night with 3 meals
- ¥17,400
- Dinner only
- ¥13,800
- Room only, no meals
- ¥11,000
- Yokoo Campsite
- ¥2,000
Yokoosanso weather (hourly, 14 days)
Sunrise today 06:13, 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 | 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 | -1° | 0° | 1° | 1° | 1° | 3° | 8° | 11° | 12° | 11° | 7° | 7° | 7° | 7° | 7° | 9° | 10° | 13° | 12° | 10° | 9° | 8° | 9° | 7° | 8° | 10° | 8° | 4° | 3° | 1° | 0° | -1° | -1° | 0° | -1° | -3° | -4° | -4° | -5° | -5° | 4° | 7° | 5° | 0° | 1° | 2° | 3° | 4° | 4° | 8° | 6° | -3° | -3° | 5° | 5° | 1° | -4° | -1° | 1° | -5° | -4° | 4° | 5° | -3° | 1° | 2° | 4° | -3° | 0° | 7° | 7° | 0° | 1° | 8° | 7° | 7° | 7° | 9° | 6° | 1° | 1° | 5° | 6° | 2° |
| Precipitation | mm | 4.4 | 6 | 2.9 | 1.0 | 0.3 | 0.2 | 0.2 | 2.0 | 0.9 | 9 | 2.2 | 0.4 | 0.3 | 0.1 | 0.4 | 0.2 | 0.3 | 0.1 | 0.7 | 0.6 | 0.6 | 0.5 | 0.2 | 1.2 | 0.1 | 3.2 | 5 | 2.0 | 0.2 | 1.0 | 0.7 | 8 | 9 | 2.8 | 0.7 | 0.2 | ||||||||||||||||||||||||||||||||||||||||||||||||
| New snow | cm | – | – | <.1 | 0.2 | 0.6 | 0.8 | 0.7 | 0.5 | 0.1 | <.1 | <.1 | <.1 | 0.2 | 0.3 | <.1 | – | 0.2 | <.1 | 3.0 | 4.7 | 2.0 | <.1 | 0.1 | 0.7 | <.1 | <.1 | 0.1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | <1 | <1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 4 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | <1 | <1 | <1 | <1 | <1 | <1 | <1 |
| Wind | m/s | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 2 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 5 | 5 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 2 | 3 | 3 | 2 | 4 | 3 | 1 | 1 | 2 | 5 | 3 | 7 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 |
| Wind gusts | m/s | 6 | 6 | 5 | 5 | 5 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 6 | 6 | 7 | 9 | 9 | 11 | 12 | 10 | 10 | 13 | 16 | 12 | 15 | 19 | 19 | 18 | 16 | 16 | 16 | 18 | 19 | 20 | 20 | 18 | 14 | 12 | 11 | 10 | 8 | 7 | 8 | 6 | 7 | 9 | 12 | 12 | 12 | 13 | 13 | 8 | 5 | 7 | 17 | 15 | 24 | 26 | 15 | 7 | 5 | 7 | 11 | 9 | 13 | 12 | 10 | 7 | 5 | 5 | 7 | 6 | 9 | 9 | 14 | 14 | 17 | 14 | 17 | 13 | 6 | 5 | 7 | 6 |
| Wind dir. | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | |
Facilities and rooms
- Open
- 2026: open April 27–November 3
- Rooms
- dormitory
- Bedding
- provided
- Check-in
- 14:00
- Check-out
- 09:00
- Water
- Private water supply. Water facilities at campground
- Toilet
- Mountain-area human waste treatment facility. Campsite public toilets use a contribution system (included in camping fee)
- Drying room
- Warm-air drying room (fan only in sunny weather)
- Charging
- Overnight guests may use indoor outlets (bring chargers; no hair dryers, etc.)
- Shop
- Drinks, alcohol, trail snacks, original gear
- Bath
- Overnight guests only, around 16:00–20:00. No soap or shampoo
- Wi-Fi
- Free for overnight guests. Mountain connection may be unstable
- Location
- 36.293376, 137.699241
Mountains near Yokoosanso
Huts, campsites and lodging near Yokoosanso
Mountain huts
Campsites
- Yokoo Campground
- 蝶ヶ岳ヒュッテ テントサイト
- Tokusawa Camping Ground
- Karasawa Tent Site
- Babadaira Camp Site