霧雨の独立峰 低温と泥濘に注意

Currently, Rishiri Mountain summit experiences light drizzle with a temperature of 3.8 degrees Celsius, feeling like 1.2 degrees Celsius. Humidity is 99% and visibility is 4.9 kilometers. A significant temperature difference of 9.5 degrees Celsius exists between the summit and the base, necessitating caution for rapid environmental changes due to elevation. Light drizzle is expected to continue through the morning, but the forecast indicates a shift to cloudy conditions around noon, with precipitation temporarily ceasing. Temperatures are projected to rise to the 8-degree Celsius range during the day, then drop again by evening.

Due to the drizzle and high humidity, ground conditions are generally wet to muddy. The brittle volcanic scree from the 9th station to the summit is particularly slippery when wet. Exercise extreme caution against falls and slips, and ensure careful foot placement. Waterproof hiking boots and gaiters will be effective.

As the perceived temperature will remain low throughout the day, waterproof-breathable outer layers, a fleece mid-layer, and a quick-drying base layer are essential. For stops or on exposed ridges, be prepared to add an insulating layer such as a down jacket. Carrying full rain gear is a given, but waterproof gloves and a warm hat are also crucial. Crampons or chain spikes are not required.

While there are no restrictions due to strong winds, the persistent low temperatures, drizzle, and high humidity pose a significant risk of hypothermia from getting wet. Keep breaks short and change out of wet clothing promptly. Current visibility is 4.9 kilometers, but considering the potential for dense fog due to sea winds, continuously monitor surrounding conditions and be prepared to make the decision to turn back if necessary.