午後から霧雨肌寒い。濡れた地面に足元注意

Mount Hakkoda summit is experiencing a cool, partly cloudy morning with an air temperature of 7.5°C and a feels-like temperature of 4.5°C. Winds are light at 2.3 m/s, and visibility is good at over 11 km. There is a nearly 5°C temperature difference between the summit and base, so expect to feel chilly while moving in the higher elevations.

Partly cloudy conditions will persist through the morning, but light drizzle is expected to begin around noon, intensifying to a steady drizzle by 3 PM. Although precipitation amounts will be minor, trails will become wet and muddy, especially in wetlands and forested areas where the soil will be saturated, making footing slippery. Waterproof and breathable rain gear is essential. Given the low feels-like temperature, always carry insulating layers such as fleece or a light down jacket. Crampons or microspikes are not needed.

The afternoon drizzle and rising humidity increase the risk of getting lost in thick fog, particularly in wetland areas. If traversing routes like the one from Mt. Odake down to Sukayu, or crossing any wetlands, pay close attention to changes in visibility and constantly check your map, compass, and GPS. Getting wet can further lower your body temperature, slightly increasing the risk of hypothermia. Maintain your energy levels with frequent breaks and adequate nutrition.

Precipitation is forecast to cease by nightfall, with clear skies expected into the early morning of May 25th. Temperatures will drop further, reaching 4.5°C by dawn, necessitating strict cold weather precautions for any post-sunset activities.