苗場山頂台地は快晴。広大な湿原を堪能せよ

As of 7 AM, Naeba summit reports mostly clear skies with a temperature of 9.6℃, feeling like 7.1℃. Winds are light at 1.13m/s, and visibility is excellent, exceeding 20km. Note the 8℃ temperature difference between the summit and base.

Clear to mostly clear skies are expected throughout the day, with temperatures rising to 13.1℃ by noon. Winds will remain light, offering ideal conditions to explore the vast high moor on the summit plateau. Expect a comfortable effective temperature of around 10℃ during activity. For layering, use a quick-drying base layer, a light fleece as a mid-layer, and carry a windproof outer shell. While the outer shell might not be needed during active hiking, it is crucial for warmth during breaks or in exposed areas with gusts up to 7.2m/s. The ground is generally dry due to no precipitation, but strictly adhere to the designated boardwalks within the marshland. This is essential for both environmental protection and personal safety, as stepping off the boardwalks can lead to unstable footing.

Precipitation probability increases after 3 PM, with light rain expected to begin in the evening. By 9 PM, temperatures will drop to 7.7℃, and winds will strengthen to 2.1m/s with gusts up to 10.5m/s. The combination of rain and wind significantly increases the risk of hypothermia, so a descent before sunset is strongly recommended. Always carry full rain gear, and be prepared with a map, compass, or GPS in case of unexpected fog, which can lead to disorientation on the plateau.