穏やかな晴天。活火山特有のザレ場に注意

As of 8 AM, Mt. Meakan summit enjoys clear skies with a perceived temperature of 1.8°C. Mild northerly winds are expected throughout the day, with the summit temperature rising to 9.7°C by noon. There is approximately a 5°C difference in temperature between the summit and the base. While hiking generates warmth, breaks and exposed ridges can be chilly. A layering system consisting of a wicking base layer, a fleece or light down mid-layer, and a windproof shell outer layer is essential for easy adjustment.

There is no snow cover, and the ground is generally dry. Crampons or microspikes are not required. However, as an active volcano, Mt. Meakan has areas around the crater lakes and fumarole groups where the ground may be damp. The scree sections on the Onneto Trail are dry and prone to slipping, so pay close attention to your footing.

Light drizzle is forecasted around 12 PM, but precipitation will be minimal. Visibility will remain over 20km throughout the day, and the risk of strong winds is low, with gusts peaking at approximately 7.1 m/s. The risk of lightning is also low. While the risk of hypothermia is low during daytime activities, temperatures will drop to near 0°C in the evening, making adequate cold weather gear crucial even for day trips. Particularly, as the wind shifts to southwesterly in the evening, the risk of acute sulfur gas poisoning from downwind fumaroles increases, requiring constant awareness of wind direction.