岩手山 低温と霧雨 足元と視界に注意

Mt. Iwate summit currently experiences light drizzle with a temperature of 1.9℃, feeling like -0.5℃ due to high humidity at 97% and visibility below 1km. There is a 9.2℃ temperature difference between the summit and the base. While there might be a brief period of partly sunny skies around noon, light drizzle will persist throughout the morning and afternoon, with temperatures not exceeding 4.9℃.

Ground conditions remain wet to muddy due to continuous light drizzle and high humidity. Particular caution is needed on the exposed rocky sections and around the rim of the Yakushidake crater, where loose stones will be slippery when wet. Route finding requires extreme care due to poor visibility. There is no snow cover, so crampons or microspikes are not necessary.

With the wind chill remaining near freezing, proper cold weather layering is essential. Wear a quick-drying synthetic or merino wool base layer, a warm fleece mid-layer, and waterproof-breathable shell jacket and pants. Gloves and a warm hat are also crucial. Although wind speeds are low, the combination of light drizzle and high humidity significantly increases the risk of hypothermia if you get wet. Consume adequate energy from snacks and be prepared to turn back if you start feeling cold.