Mount Okoya
御小屋山
Chino, Nagano · Elevation 2,137 m
Mount Okoya (2,137 m) lies in Chino, Nagano Prefecture, on the Okoya Ridge that descends west from Amidadake in the Yatsugatake range. Its slopes form sacred forest owned by the upper shrine of Suwa Taisha, traditionally the source of the giant logs felled as the onbashira pillars hauled in the Onbashira Festival held once every seven years. The Okoya Ridge trail up to Amidadake passes over the peak, which is included in the "Quiet Ridge Walks" list.
Mount Okoya at a glance
- Weather: The most settled day in the next 7 days is Sun, November 8: clear, gusts up to 8 m/s. Fri, Nov 6, Sat, Nov 7: strong wind (gusts up to 18 m/s).
- Route: The shortest is Mount Amidadake Out-and-Back via Okoya Ridge and Mount Okoya from Funayama Crossroads: about 6 h 56 min, 11.4 km, about 1,240 m of climbing.
Mount Okoya weather (hourly, 14 days)
Sunrise today 06:10, sunset 16:50
| 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° | 1° | 0° | 0° | 1° | 7° | 9° | 9° | 7° | 4° | 5° | 4° | 5° | 5° | 5° | 9° | 14° | 12° | 8° | 7° | 5° | 5° | 5° | 9° | 12° | 12° | 6° | 3° | 0° | -2° | -4° | 3° | 5° | 3° | -2° | -4° | -3° | -4° | -5° | 3° | 8° | 8° | 2° | 1° | 1° | 2° | 2° | 5° | 10° | 10° | 2° | 1° | 5° | 7° | 1° | -1° | 0° | 3° | -4° | -5° | 3° | 6° | -2° | -2° | 3° | 5° | -4° | -4° | 4° | 8° | -1° | -1° | 6° | 8° | 4° | 4° | 10° | 11° | 1° | -3° | 3° | 7° | 2° |
| Precipitation | mm | 1.0 | 6 | 7 | 3.9 | 0.6 | 0.6 | 1.6 | 0.3 | 0.5 | 0.1 | 0.1 | 0.2 | 8 | 11 | 0.3 | 0.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| New snow | cm | <.1 | 0.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 0 | 1 | 1 | 2 | 3 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 2 | 4 | 2 | 3 | 5 | 3 | 1 | 2 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 2 | 2 | 1 | 2 | 1 |
| Wind gusts | m/s | 5 | 5 | 5 | 5 | 5 | 4 | 5 | 8 | 9 | 9 | 8 | 9 | 11 | 11 | 10 | 7 | 7 | 8 | 8 | 7 | 6 | 9 | 10 | 11 | 13 | 16 | 16 | 15 | 11 | 12 | 12 | 13 | 16 | 18 | 18 | 15 | 11 | 10 | 9 | 9 | 7 | 8 | 8 | 6 | 7 | 8 | 8 | 8 | 9 | 12 | 12 | 8 | 6 | 8 | 14 | 13 | 16 | 22 | 21 | 14 | 7 | 8 | 12 | 10 | 10 | 11 | 12 | 10 | 8 | 7 | 8 | 6 | 7 | 7 | 10 | 9 | 12 | 11 | 16 | 15 | 9 | 6 | 7 | 7 |
| Wind dir. | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | |
Mount Okoya hiking routes
- Mount Amidadake Out-and-Back via Okoya Ridge and Mount Okoya from Funayama Crossroads 11.4 km · Ascent 1,239 m parking
- Southern Yatsugatake Main-Ridge Circuit 20.7 km · Ascent 1,934 m 美濃戸口 (Bus stop) (parking)
Hiking times are estimates calculated from the terrain.
Huts, campsites and lodging near Mount Okoya
Mountain huts
- 美濃戸山荘 2026: open April 25–October 5 · reservation required · sleeps 61
- 赤岳山荘 2026: open all year · reservation required · sleeps 40
- やまのこ村 2026: open April 25–October 25
- 八ヶ岳山荘 2026: open all year · reservation required · sleeps 44
- Akadake Kosen 2026: open all year · reservation required
Campsites
- 赤岳鉱泉テント場
- 行者小屋テント場
- 青年小屋テントサイト
- 夏沢だけかんばキャンプ場
Mount Okoya facts
- Elevation
- 2,137 m
- Location
- Chino, Nagano
35.973921, 138.331819 - Website
- www.vill.hara.lg.jp
- Trail Map
- www.vill.hara.lg.jp (PDF)