穏やかな夏山日和。大雪渓の落石に注意

The summit will experience clear skies this morning, with temperatures expected to exceed 10°C by noon. Winds will remain mild, and visibility is projected to be excellent throughout the day. A significant temperature difference of about 12°C exists between the summit and the base. Summit temperatures will rise from a feels-like 4°C to 8°C during the day, but it can still get chilly during activity. A wicking base layer, fleece mid-layer, and waterproof/windproof shell are essential. Always carry an additional insulation layer like a light down jacket for breaks or exposed ridges.

Ground conditions are mostly dry with exposed rock. However, the Daisekkei (Great Snow Valley), one of Japan's three major snowfields, still holds snow, and rising temperatures increase the risk of rockfall. Plan to traverse it early in the morning and always wear a helmet. Lightweight crampons or microspikes should be carried for potential slips on the snowfield.

The risk of thunderstorms is low, but clouds may build in the afternoon, requiring vigilance for sudden changes in visibility. Gusts up to around 8 m/s are not expected to impede movement significantly. With appropriate layering, the risk of hypothermia is also low. Today is suitable for mountain activities.