午前は穏やか 午後から雨 足元は滑り濃霧に注意

Mount Miyanoura's summit is currently 12.4 degrees Celsius with a feel of 10.8 degrees, mostly clear skies, and light winds. The temperature difference from the base is approximately -4.7 degrees Celsius. This calm weather is expected to last until around 9 AM, then clouds will move in by noon, light drizzle will begin around 3 PM, and full rain is forecasted for the evening and overnight.

Ground conditions will transition from relatively dry in the morning to wet and muddy as rain begins in the afternoon. Yakushima is an exceptionally rainy region, and footing will become slippery, especially in humid areas like Hananoego Marshland and on rocky ridges. Careful steps are essential.

While the effective temperature during activity will remain in the low 10s, afternoon rain, increased humidity, and wind will further lower the perceived temperature, raising the risk of hypothermia. A quick-drying base layer, a thin fleece or synthetic insulation mid-layer, and a waterproof-breathable rain jacket as an outer layer are mandatory. Current visibility is 1.7 kilometers, but it will worsen with afternoon rain, increasing the risk of getting lost in dense fog. Particular caution is advised in complex terrain such as the Yakusugi prime