日中視界不良と弱い雨 湿原ルートは道迷い注意

Currently, Mt. Hakkoda summit experiences mostly clear skies but with dense fog limiting visibility to less than 1km and humidity at 97%. The perceived temperature at the summit is a mild 15.4℃. This dense fog is likely to persist throughout the day. Although it will be partly cloudy around 9 AM, light rain is forecast to begin around noon with a 65% chance of precipitation. The rain is expected to clear by 3 PM, returning to mostly clear conditions.

Ground conditions will be wet to muddy due to high humidity and the midday rain. Especially in wetland areas, footing will be slippery, and puddles are likely to form. On the ridge leading from Mt. Tamoyachidake via the ropeway to Mt. Odake and within the wetlands, there is an extremely high risk of getting lost in the dense fog specific to these wetland environments. Frequent checks of GPS, maps, and compass are essential. Do not hesitate to stop or turn back if the route becomes unclear.

For layering, a fast-drying base layer, a light fleece as a mid-layer, and waterproof breathable rainwear as an outer layer are mandatory. Although the perceived temperature will hover around 15℃ during the day, getting wet from the rain significantly increases the risk of hypothermia. Winds will remain generally calm, posing a low risk of strong gusts. Crampons or microspikes are not necessary, but carrying full rain gear is crucial.