穏やかな登山日和続く。夕方以降の気温低下に注意

At an elevation of 1457.94m, the daytime perceived temperature will hover around 15 degrees Celsius. A quick-drying base layer t-shirt, a thin fleece as a mid-layer, and a windproof shell jacket as an outer layer are suitable. As indicated by the automatic risk assessment, a sharp temperature drop of over 9 degrees Celsius is expected from evening onwards. It is crucial to carry an extra insulating layer such as fleece or down. If your activity extends into the evening, be prepared to turn back early.

With no precipitation and high temperatures, the ground conditions on major routes, including the Onneto Course, are expected to be dry. However, the volcanic terrain features numerous scree slopes, so continued caution against slipping is necessary. Around the crater lakes and fumarole areas, sulfur gas may drift depending on the wind direction, which will be predominantly from the south to south-southwest. Be aware that gas concentrations could be higher downwind, and if you feel unwell, you must promptly move away from the area.

The risk of lightning is low. Wind speeds, with gusts up to 9.7 m/s, are not expected to significantly impede movement, though they may feel stronger on exposed ridges. Hypothermia is not a concern during daytime activities, but due to the sharp drop in temperature in the evening, adequate cold weather gear is essential if your activity extends into the later hours. Although the probability of rain is low, mountain weather can change rapidly, so carrying rain gear is mandatory. Crampons or chain spikes are not required.