Mount Kaikoma Mountains
Alpine peak in Japan's Akaishi range, scenic ridges
Situated in central Japan's Akaishi range, Mount Kaikoma draws multi-day hikers along ridgelines and cols. Climbers tackle long approaches, seasonal alpine flora, and extensive mountain scenery.
Mount Kaikoma at a Glance#
About Mount Kaikoma#
Mount Kaikoma is a peak in the Akaishi Mountains (the Southern Alps) of central Honshu, Japan, reaching about 2,967 metres in elevation. It is recognized as one of Japan’s notable alpine summits.
The mountain offers steep granite ridges, alpine meadows and high-elevation views typical of the Southern Alps; routes approach from valleys in Yamanashi and Nagano prefectures. Trails are used for day and multi-day climbs during the summer climbing season, and ridgeline walks connect to neighboring peaks.
Kaikoma is a natural mountain formed by tectonic uplift and erosion; it has long been a destination for Japanese alpinists and was included among lists of notable mountains compiled in the 20th century. Access and route development increased with the growth of recreational mountaineering in the postwar era.
The peak sits on the main ridge of the Akaishi Mountains in central Honshu, near the boundary between Yamanashi and Nagano prefectures. It is inland from the Pacific coast and part of a high, rugged range dominated by granite and alpine terrain.
- Elevation: Sits at the northern end of the Akaishi Mountains and reaches an elevation of 2,967 metres.
- Status: Included among Japan’s well-known alpine peaks and frequently climbed in the summer high-season.
Best Time to Visit Mount Kaikoma#
For Mount Kaikoma (a high Japanese Alpine peak) the best time is midsummer (July-September) when routes are most likely free of persistent snow and weather is relatively stable.
Weather & Climate near Mount Kaikoma#
Mount Kaikoma's climate is classified as Subarctic - Subarctic climate with cool summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -14°C to 18°C. Heavy rainfall (2239 mm/year), wettest in August.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | -15° - -5° | -19° | 56 mm | partly cloudy | 88% | 7.0 m/s | 0.4 low | 9.9h |
| February | Poor | -15° - -5° | -19° | 75 mm | partly cloudy | 85% | 7.4 m/s | 0.6 moderate | 10.8h |
| March | Poor | -12° - -2° | -14° | 127 mm | partly cloudy | 80% | 6.5 m/s | 0.9 moderate | 11.8h |
| April | Poor | -5° - 5° | -6° | 181 mm | partly cloudy | 76% | 7.4 m/s | 1.2 high | 13.0h |
| May | Poor | 0° - 10° | 1° | 205 mm | overcast | 75% | 6.6 m/s | 1.5 high | 13.9h |
| June | Poor | 4° - 13° | 6° | 291 mm | overcast | 80% | 6.0 m/s | 1.5 high | 14.4h |
| July | Acceptable | 9° - 17° | 13° | 301 mm | overcast | 83% | 5.2 m/s | 1.6 very high | 14.1h |
| August | Acceptable | 9° - 18° | 14° | 362 mm | overcast | 82% | 5.4 m/s | 1.7 very high | 13.3h |
| September | Poor | 6° - 14° | 7° | 316 mm | overcast | 84% | 5.7 m/s | 1.3 high | 12.3h |
| October | Poor | 0° - 9° | 0° | 175 mm | partly cloudy | 85% | 5.3 m/s | 0.9 moderate | 11.2h |
| November | Poor | -5° - 4° | -6° | 99 mm | partly cloudy | 85% | 6.1 m/s | 0.5 moderate | 10.2h |
| December | Poor | -11° - -2° | -14° | 51 mm | some cloud | 87% | 6.8 m/s | 0.4 low | 9.7h |
