岩手山 霧雨に濡れる日。午後は気温低下

Current conditions at Mt. Iwate summit are mostly clear, but light drizzle is expected to begin shortly. Temperatures will gradually drop from mid-morning, reaching around 11 degrees Celsius in the afternoon. With the body getting wet, the perceived temperature will feel even lower. Gusts of 11.8 m/s are forecasted for 3 PM, and as an isolated peak, Mt. Iwate is susceptible to strong winds above the tree line. Essential gear includes full waterproof and breathable outerwear, both top and bottom, along with a mid-layer for insulation.

Trail surfaces will become wet and muddy due to the drizzle. Particular caution is advised on the Ohatsu-meguri route around the Yakushidake Crater, where wet floating rocks can cause slips and falls. While crampons or microspikes are not necessary, choose hiking boots with good traction.

No significant alerts were detected by the automated risk assessment. However, drizzle will persist throughout the day, transitioning to light rain with increasing precipitation probability from evening into night. Temperatures will hover around 10 degrees Celsius, raising the risk of hypothermia if your activity extends into the later hours. It is prudent to plan for an early finish to your day.