白馬岳 稜線はガスに包まれ涼しい風

Hakuba-dake summit is currently enveloped in mist, with visibility below 1km. The temperature is 4 degrees Celsius, feeling like 1.4 degrees Celsius. Winds are light, minimizing wind chill. The temperature difference from the base at 13.2 degrees Celsius is significant.

Throughout the day, conditions will transition from partly cloudy to cloudy, with temperatures ranging from 5 to 6 degrees Celsius. Poor visibility is likely to persist, requiring careful route finding, especially when navigating the Hakuba Oike Route or the alpine flower fields on the ridge.

When traversing the Daisekkei (Great Snow Valley), microspikes or crampons are essential due to lingering snow, even in summer. The risk of rockfall is constant, so it is advisable to cross early in the morning when temperatures are cooler. Precipitation probability rises to 76% after 3 PM, with light drizzle expected overnight.

The apparent temperature will hover around 5 degrees Celsius throughout the day. It is crucial to wear a wicking base layer, a mid-layer such as fleece, and a waterproof-breathable outer shell. To mitigate the risk of hypothermia, manage perspiration to avoid chilling and insulate promptly during breaks. Although strong winds are not forecasted, extreme caution is necessary in low visibility conditions.