Mount Myōgi Mountains

Jagged, rocky mountain in Gunma popular among climbers

Jagged volcanic ridges near Tomioka and Annaka in Gunma, popular for short technical routes and day hikes. Climbers come for exposed rock faces, cliffside paths and seasonal autumn colors accessible from nearby towns.

Main image
1st Gate-Rock Nakanotake Miogi (3110696858).jpg
AokiShigeru-1902-Cartoon Climbing Mt.Myōgi.png
AokiShigeru-1902-First Stone Gate of Kondō in Mt Myōgi-lower part.png
AokiShigeru-1902-First Stone Gate of Kondō in Mt Myōgi-upper part.png
AokiShigeru-1902-Myōgi the Devine Fort.png
AokiShigeru-1902-神塞妙義.png
Gunma Prefectural Road 196.JPG
Kamiosaka, Shimonita, Kanra District, Gunma Prefecture 370-2621, Japan - panoramio (1).jpg
Kamiosaka, Shimonita, Kanra District, Gunma Prefecture 370-2621, Japan - panoramio.jpg
Mount Myogi by Fujishima Takeji.jpg

Mount Myōgi at a Glance#

About Mount Myōgi#

Mount Myōgi is a rugged mountain in Gunma Prefecture, Japan, famous for its dramatic rock formations and steep ridges. It is a well-known destination for hikers and climbers seeking challenging routes and panoramic views.

The area comprises multiple rocky peaks and cliff faces formed from hard volcanic and sedimentary rock, with established trails linking saddles and summits; routes vary from straightforward walks to exposed scrambles requiring caution. The mountain is popular with day hikers from nearby urban centres.

Historically the mountain area has cultural significance with local shrines and small temples located on or near paths, and it has been visited for centuries by pilgrims and recreational climbers. Trail development and climbing routes evolved gradually as recreational use increased.

Geographically it lies in western Gunma Prefecture, north of the Kantō plain; the supplied coordinates place it within the Myōgi range, accessible from nearby towns and transportation hubs in Gunma.

  • Terrain and climbing: Known for very steep, jagged rock formations and cliff faces that provide short, strenuous hiking and technical rock-climbing routes.

Tips for Visiting Mount Myōgi#

  • Visit early on a weekday (before 8-9 a.m.) to enjoy the jagged summits with far fewer climbers; late autumn brings excellent clear views and fall color around the ridges.
  • Use Myōgi Station (Jōshin Dentetsu) as your public-transport access point and walk from the station to the shrine/trailhead rather than trying to drive into the smaller parking areas.
  • Don't skip the short circuit around Myōgi Shrine and the lower rock outcrops-the close-up views of the steep, sculpted rock faces are often missed by day-trippers who head straight for the higher ridge routes.

Best Time to Visit Mount Myōgi#

Best visited in late spring or autumn for stable weather, good trail conditions, and scenic views.

Spring
April-May · ~5-15 °C (mountain)
Mild weather and melting snow make lower trails pleasant and wildflowers start to appear; rock-climbing routes become more accessible as conditions improve.
Autumn
October-November · ~5-15 °C (mountain)
Crisp, stable weather and vivid fall foliage make this a very popular time for hiking and photography.
Winter
December-February · ~-5-5 °C (mountain)
Cold with snow and ice on exposed rock-routes can be hazardous and require winter gear and experience.

Weather & Climate near Mount Myōgi#

Climate

Mount Myōgi's climate is classified as Hot-Summer Continental - Hot-Summer Continental climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from -5°C to 28°C. Abundant rainfall (1227 mm/year), wettest in September.

Air Quality: AQI 55 Moderate
Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
30°
Warmest Month
-15°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Acceptable -5° - 6° -4° 38 mm partly cloudy 93% 3.1 m/s 0.3 low 9.8h
February Acceptable -5° - 6° -3° 52 mm partly cloudy 92% 3.2 m/s 0.5 moderate 10.7h
March Poor -2° - 9° 0° 66 mm partly cloudy 85% 3.2 m/s 0.8 moderate 11.8h
April Acceptable 4° - 15° 8° 82 mm partly cloudy 81% 2.8 m/s 1.2 high 13.0h
May Good 9° - 20° 14° 102 mm partly cloudy 80% 2.8 m/s 1.5 high 14.0h
June Good 14° - 23° 18° 169 mm overcast 84% 2.4 m/s 1.5 very high 14.5h
July Good 18° - 26° 22° 167 mm overcast 86% 2.7 m/s 1.6 very high 14.2h
August Good 19° - 28° 23° 169 mm overcast 86% 2.8 m/s 1.6 very high 13.4h
September Good 15° - 23° 19° 183 mm overcast 87% 2.3 m/s 1.2 high 12.3h
October Good 8° - 17° 13° 115 mm partly cloudy 88% 2.2 m/s 0.8 moderate 11.1h
November Acceptable 2° - 13° 6° 54 mm partly cloudy 89% 2.4 m/s 0.5 low 10.1h
December Acceptable -3° - 8° 0° 30 mm partly cloudy 91% 2.6 m/s 0.3 low 9.6h