穏やかな山頂だが防寒は必須。剣ヶ峰は風に注意

The morning starts mostly clear with excellent visibility across the terrain. While the base records a warm 17 degrees Celsius, the summit registers 7.8 degrees Celsius, with a felt temperature of 6.2 degrees Celsius. This significant temperature difference due to altitude demands robust cold weather gear for all climbers.

Daytime apparent temperatures could dip to approximately 4 degrees Celsius, especially when exposed to wind. Essential layering includes a wicking base layer, a fleece or light down mid-layer for insulation, and a wind and waterproof outer shell. Particular attention should be paid to exposed areas such as Ken-ga-mine peak and around the crater lakes, where occasional gusts could further reduce the felt temperature, increasing the risk of cold stress.

Ground conditions are generally dry, but a light drizzle is forecast around 3 PM. During this period, the distinctive white volcanic gravel slopes may become slick when wet, requiring careful footing. Always have rain gear readily accessible. Carrying a helmet is also strongly recommended for this volcanic terrain. While risks of strong winds or thunderstorms are low, vigilance against hypothermia is crucial, emphasizing continuous assessment of personal layering and physical condition.