稜線は穏やか。大雪渓は滑落と落石に警戒を

Hakuba-dake summit currently experiences 8.8 degrees Celsius with a feels-like temperature of 6.4 degrees Celsius, indicating an autumn-like climate despite summer at the base. A significant 12.3-degree Celsius difference exists between the summit and the base. Throughout the day, generally clear skies are expected, with temperatures peaking at 13 degrees Celsius. However, gusts up to 11 meters per second are possible on the ridges, necessitating wind protection. A layering system comprising a base layer, a mid-layer like fleece, and a windproof and waterproof outer shell is essential. An additional insulating layer should be carried for breaks or exposed areas.

Ground conditions are primarily dry and rocky, except for the Daisekkei (Great Snow Valley) section, where no snow depth is currently reported. The Daisekkei, one of Japan's three major snow valleys, retains residual snow even in summer, posing risks of slipping and rockfall. For the route from Sarukura via Hakuba-jiri to the summit, light crampons and an ice axe or trekking poles are mandatory for cautious passage. Be especially vigilant for rockfall from above as temperatures rise.

While the risk of thunderstorms is low, the probability of precipitation increases to 27% around 3 PM. Although zero precipitation is forecasted, be prepared for possible summer showers by carrying rain gear. Current visibility is fair at 1.4 kilometers with no significant deterioration expected. To fully enjoy the beautiful alpine flowers on the ridges, always carry a map, compass, and GPS for navigation. Hypothermia risk is manageable with proper gear and activity management, but be cautious of chilling due to wetness.