富士山快晴、穏やかな山頂へ向かう登高

Mount Fuji summit currently enjoys clear skies with a temperature of 7.1°C and a gentle wind speed of 1.64 m/s. Visibility exceeds 20km, offering excellent views. The forecast indicates continued clear weather throughout the day, with temperatures rising to around 10.7°C by noon. Winds remain light, promising a favorable day for ascent. The temperature difference from the base at 23°C is a significant 15.9°C, highlighting the rapid change with altitude. The ground condition, particularly on the steep volcanic scree of routes like Yoshida Trail or Fujinomiya Trail, is dry due to no precipitation. Be vigilant against falling rocks.

However, a significant temperature drop of 7°C is expected over the forecast period. From a daytime high of 10.7°C, temperatures will fall to 3.2°C by early tomorrow morning. Prepare for rapid changes in conditions by carrying an extra insulating layer from the start. Make early decisions to turn back if necessary. Daytime perceived temperatures will range from 4°C to 10°C. A three-layer system (base, mid, outer) is essential, with an additional warm down jacket for breaks or night activities.

While crampons or microspikes are not required, rain gear, gloves, a hat, and sunglasses are mandatory. As an isolated peak, Mount Fuji can experience colder perceived temperatures in exposed areas like the Okuni-meguri (crater rim traverse), even with light winds. During night and early morning, temperatures will approach freezing, increasing the risk of hypothermia. Strict cold weather protection is crucial. The maximum gust speed today is around 7.2 m/s, and the risk of thunderstorms is low, but always monitor changes in the sky.