霧雨で濡れた山頂。冷え込みに注意し行動を

As of 7 AM, Sapporo Kokusai Ski Resort summit reports heavy drizzle with a temperature of 9.6℃, feeling like 8.1℃. The base is 12.6℃, indicating a 3℃ difference due to elevation, highlighting a significant disparity in perceived temperature. Drizzle is expected to continue intermittently throughout the day, with precipitation probability exceeding 50% after 12 PM. The ground will transition from wet to muddy conditions in the afternoon. There is no snow cover, indicating spring hiking conditions.

At the summit during the day, the forecast temperature is around 12℃ with winds of approximately 2 m/s. However, getting wet from the drizzle will significantly lower the feels like temperature. When traversing the Sapporo Kokusai Ski Resort's longest 3,600m course, prolonged exposure in wet conditions increases the risk of hypothermia. Essential layering includes a quick-drying base layer, a fleece mid-layer, and a waterproof-breathable shell as an outer layer. As per the automatic risk assessment, a 6℃ temperature drop is expected within the forecast period, so carry an additional insulating layer such as another fleece.

Essential gear includes full rainwear and waterproof hiking boots. Gaiters are also recommended for muddy sections. Crampons or microspikes are not necessary. With increasing precipitation probability in the afternoon, an early start and timely decision-making to turn back in case of worsening weather are crucial. Be mindful of reduced visibility due to fog at the summit. The risk of thunderstorms is low.

Precipitation is expected to cease after 6 PM, but temperatures will continue to drop, reaching 5.8℃ by early morning. Strictly avoid any activity after sunset.