富士山頂快晴。風穏やかだが体感は氷点下

Fuji's summit at 3766.43 meters is clear with excellent visibility as of 8 AM. The temperature is minus 1.5 degrees Celsius, feeling like minus 5.5 degrees Celsius. Clear skies will persist throughout the day, with the temperature reaching a high of 1.8 degrees Celsius around noon, but conditions will remain near or below freezing. While winds are generally calm, gusts exceeding 10 meters per second will significantly lower the apparent temperature on the exposed slopes above the tree line, characteristic of this isolated peak.

The volcanic scree slopes starting from the 5th station are dry, with no precipitation or snow cover. Many rocky sections are exposed, requiring caution against slips and falling rocks. During the ascent, maintain a slow pace and ensure adequate hydration to mitigate the risk of altitude sickness.

Essential gear for operating at 3766.43 meters includes a quick-drying synthetic or merino wool base layer, a thick fleece or lightweight down for the mid-layer, and a windproof, waterproof hard shell jacket and pants as outer layers. Gloves, a knit hat, and a balaclava are crucial for protecting extremities and the head from the cold. Crampons and microspikes are not necessary, but rain gear should be carried for wind protection. Temperatures will drop further in the evening, reaching below minus 3 degrees Celsius at night, so all activities should be completed during daylight hours.