残雪緩む 穏やかな日中となる

Current conditions at Asahidake summit are mostly clear, with a temperature of 4.7℃ and a felt temperature of 1.5℃. There is approximately a 4℃ temperature difference from the base, so the summit will remain chilly even during the day. Winds will be calm throughout the day, with gusts up to about 6.5 m/s. Snow depth remains abundant at 132cm.

Clear skies will prevail during the day, with temperatures rising to a peak of 7.5℃ in the afternoon. This will soften the snow surface, creating slushy conditions, especially in the afternoon. On the route from the Ropeway Sugatami Station to the summit, some sections may become unstable due to the softening snow, requiring caution against slipping. Temperatures will drop below freezing at night, so the snow surface may be hard and icy in the early morning.

The felt temperature will rise to around 5℃ during the day, but will drop below freezing in the early morning and evening. For layering, choose a quick-drying base layer, a fleece mid-layer, and a windproof, waterproof shell as your basic setup. Always carry a lightweight down jacket or synthetic insulation for breaks and in case of adverse weather. Light crampons or microspikes are essential for early morning and evening travel, or wherever icy conditions are expected. It is recommended to carry them even during the day as the softening snow can be slippery. Around the Jigokudani fumarole group, be aware of gas accumulation on calm days.

The risk of lightning is extremely low. While winds are calm, the felt temperature near the summit remains low, dropping below freezing in the early morning and evening. Therefore, moving with wet clothing increases the risk of hypothermia. Proper layering and body temperature management during activity are crucial. It is advisable to start your ascent in the early morning and complete your descent before the late afternoon when the snow becomes too soft.