日中は穏やか。稜線は風に注意

Mount Chokai summit is mostly clear at 8 AM. The temperature is 3.6 degrees Celsius, with a wind chill of 0.4 degrees Celsius, indicating a significant chill. The temperature difference from the base is 11.3 degrees Celsius, highlighting the need for proper layering at altitude. Temperatures are expected to gradually rise throughout the day, reaching 7.7 degrees Celsius by 3 PM. However, gusts from the west to southwest could reach up to 10.9 m/s, particularly on exposed ridges.

Ground conditions on major routes like Hōkodate Course and Yunodai Course are mostly dry. However, residual snow can still be found in shaded areas, along stream beds, and especially on the northern slopes around Shinzan, where snowfields persist. While full crampons are not necessary, carrying light crampons or microspikes is recommended for traction on these snowy patches. Be mindful of rockfall risk around Shinzan and watch your footing carefully.

Essential cold weather gear is crucial. Wear a quick-drying base layer, a thin fleece or softshell as a mid-layer, and a windproof and waterproof shell for breaks or exposed ridges. Even with rising temperatures, the daytime wind chill is expected to hover around 5 degrees Celsius, so always be aware of the risk of hypothermia.

While the risk of thunderstorms is low, be vigilant for sudden strong winds and dense fog rolling in from the Sea of Japan, which are characteristic risks for Mount Chokai. On long ridge routes, the wind's impact will be more pronounced. Monitor changes in visibility and wind strength, and be prepared to make early decisions regarding your ascent or descent.