利尻山 山頂は冬の様相。9合目脆い火山礫は凍結に注意

Today's Mount Rishiri summit will experience cloudy conditions throughout the morning, with wind chill temperatures remaining severely cold, ranging from minus 5 to minus 10 degrees Celsius. The temperature difference from the base is nearly 10 degrees, indicating increasingly winter-like conditions at higher elevations. Specifically, the fragile volcanic scree terrain from the 9th station to the summit is highly likely to be frozen due to these low temperatures. Considering the risk of slipping and falling, crampons and an ice axe are essential equipment.

Thorough cold weather protection is paramount. Wear a quick-drying base layer, a thick fleece or light down jacket as a mid-layer, and a waterproof and windproof shell as an outer layer. Gloves and a hat are also indispensable. Adjust your layers frequently during activity to maintain body temperature. Gusts will reach a maximum of 9.9 m/s, which is not at strong wind warning levels, but will contribute significantly to lower perceived temperatures, requiring caution.

The forecast indicates clear skies in the afternoon, but temperatures will remain around 0 degrees Celsius. Even with sunlight, frozen sections may not melt easily. The risk of hypothermia remains high throughout the day, so carry ample food and warm beverages, and avoid pushing your limits. Temperatures will drop further after sunset, reaching around minus 3 degrees Celsius overnight.