夏山登山日和。午後から視程悪化に注意

Current conditions at Asahidake summit show a temperature of 10.9℃, feeling like 9.9℃. While forecasts indicate a rise to 14.5℃ during the day, it remains cool for a summer mountain. Always carry a quick-drying base layer, a mid-layer like fleece, and a windproof, waterproof outer shell. Hypothermia is a constant risk even in summer.

The ground is generally dry with no precipitation, but high humidity suggests some areas may be damp from dew in the early morning. A forecast of light drizzle in the afternoon means trails could become wet. Exercise caution on rocky sections and boardwalks as they may be slippery. Crampons or microspikes are not required, but rain gear is essential.

Visibility is currently less than 1km but is expected to improve throughout the day. However, expect increasing cloudiness in the afternoon with a possibility of localized fog. Around the Jigokudani (Hell Valley) fumarole area, volcanic gas can accumulate, requiring careful navigation in poor visibility to avoid losing the trail. There are no significant risks of thunderstorms or strong winds; maximum gusts are around 7.1 m/s, posing no major impediment to movement. Temperatures are forecast to drop to 8.9℃ overnight, so it is prudent to avoid activity after dusk, even for day trips.