霧雨と低温続く稜線。望岳台コースは装備万全に

Light drizzle will continue throughout the day, with the summit's felt temperature hovering around 0 degrees Celsius. Especially on the Bogakudai Course, where the terrain extends above the tree line, exposed rock formations will become slippery when wet. A waterproof and breathable outer shell (top and bottom) is essential. Layer a quick-drying base layer with a fleece or light down mid-layer to prevent hypothermia due to moisture. Gloves and a hat must also be carried.

Although the wind is generally light, getting wet from the drizzle can rapidly deplete body heat. Avoid prolonged breaks and constantly monitor your body temperature during activity. As an active volcano, Tokachidake always carries the risk of high volcanic gas concentrations in certain areas. Should you feel any physical abnormality, a prompt decision to turn back is crucial. Crampons or chain spikes are not required, but caution is needed on slippery rocky sections.

The weather is expected to clear up after 6 PM, turning into a fine evening. However, temperatures will drop further, reaching around 0 degrees Celsius overnight. If your activity extends into the evening and you find yourself on the ridge after sunset, additional layers of insulation will be necessary. While the risk of lightning is low and visibility will improve, maintaining vigilance against low temperatures remains important.