Mt. Sankakuyama
三角山
Yuzawa, Niigata · Elevation 1,685 m
Sankakuyama is a 1,685 m peak on the ridge between Mt. Tairappyō and Mikuni Pass, on the border of Yuzawa Town (Niigata) and Gunma Prefecture, within Jōshin'etsu-kōgen National Park. It lies on the Gunma Prefectural Border Ridge Trail, where a branch trail descends via Mt. Kenashi to Asakai. It is listed on the "Gunma Prefectural Border Ridge Trail" and "Kantō Shūhen Yamanami Aruki."
Mt. Sankakuyama at a glance
- Weather: The most settled day in the next 7 days is Wed, November 4: clear, gusts up to 9 m/s. Sat, Nov 7: strong wind (gusts up to 17 m/s).
Mt. Sankakuyama weather (hourly, 14 days)
Sunrise today 06:10, sunset 16:47
| 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 | |
| Temperature | °C | -2° | -1° | 0° | -1° | -1° | 0° | 5° | 7° | 7° | 5° | 2° | 1° | 1° | 1° | 2° | 4° | 6° | 9° | 9° | 6° | 6° | 4° | 4° | 5° | 7° | 10° | 8° | 4° | 3° | 1° | -1° | -1° | 0° | 0° | -1° | -2° | -2° | -3° | -3° | -3° | 0° | 1° | 0° | -2° | -2° | -2° | -1° | -1° | 2° | 6° | 3° | -1° | -1° | -1° | 1° | -1° | -3° | -2° | -2° | -3° | -3° | 0° | 0° | -4° | -1° | -2° | -2° | -3° | -5° | 1° | 4° | -4° | -2° | 3° | 5° | 2° | 1° | 7° | 3° | -2° | -4° | 0° | 2° | -3° |
| Precipitation | mm | 0.2 | 4.2 | 10 | 4.8 | 1.1 | 0.5 | 0.4 | 0.2 | 0.7 | 0.4 | 0.3 | 0.6 | 0.1 | 0.2 | 1.1 | 0.9 | 0.5 | 0.2 | 0.4 | 0.3 | 0.6 | 0.5 | 0.2 | 0.2 | 0.1 | 0.3 | 0.4 | 0.8 | 0.4 | 0.6 | 0.7 | 4.1 | 2.6 | 4.8 | 2.6 | 0.8 | 6 | 2.7 | 0.6 | 4.2 | 6 | 3.3 | 9 | 1.6 | ||||||||||||||||||||||||||||||||||||||||
| New snow | cm | 0.1 | 0.2 | 0.4 | 0.4 | 0.1 | <.1 | 0.1 | <.1 | 1.7 | 1.9 | 2.5 | 0.8 | 0.2 | 2.8 | 1.6 | 0.4 | <.1 | 0.5 | 0.6 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 1 | 2 | 2 | 2 | 2 | 2 | <1 | <1 | <1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | <1 | <1 | <1 | 0 | 0 | <1 | <1 | <1 | <1 | <1 |
| Wind | m/s | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 5 | 5 | 4 | 4 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 5 | 4 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 3 | 2 | 0 | 2 | 3 | 2 | 3 | 8 | 8 | 2 | 2 | 2 | 4 | 1 | 3 | 3 | 5 | 2 | 3 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 3 | 7 | 5 | 4 | 2 | 1 | 1 |
| Wind gusts | m/s | 6 | 5 | 5 | 5 | 6 | 6 | 4 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 6 | 5 | 6 | 3 | 4 | 5 | 5 | 9 | 10 | 11 | 10 | 9 | 10 | 11 | 14 | 14 | 14 | 12 | 15 | 17 | 16 | 15 | 14 | 12 | 13 | 11 | 14 | 13 | 12 | 6 | 5 | 5 | 4 | 5 | 7 | 10 | 9 | 6 | 7 | 9 | 8 | 10 | 26 | 26 | 24 | 9 | 7 | 11 | 10 | 8 | 11 | 16 | 15 | 9 | 9 | 5 | 4 | 3 | 4 | 6 | 5 | 6 | 8 | 19 | 20 | 15 | 10 | 7 | 5 |
| Wind dir. | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | |
Huts, campsites and lodging near Mt. Sankakuyama
Mountain huts
- Tairappyo no Ie 2025: open April 29–October 25 · reservation required · sleeps 12
- Ebisu Oguro Hinangoya unstaffed · sleeps 3
Lodging
- Hotel West
- Annex Kashiwaya
- Lodge Kashiwagi
- Hotel Fujiya
- 苗場プリンスホテル2号館
Mt. Sankakuyama facts
- Elevation
- 1,685 m
- Location
- Yuzawa, Niigata
36.791523, 138.828816 - National Park
- 上信越高原国立公園
- Website
- www.gunma-trail.jp
- Trail Map
- www.gunma-trail.jp (PDF)