台地の木道は濡れ滑りやすい。午後は霧雨

Morning conditions at Naeba-san summit are mostly clear with a temperature of 15.6 degrees Celsius, offering a calm start for hiking. The temperature difference between the summit and base is over 7 degrees Celsius. However, expect increasing cloudiness by noon, transitioning to light drizzle around 3 PM. The extensive alpine wetland plateau, a prominent feature of Naeba-san, will see its wooden paths become wet and slippery due to the afternoon drizzle. Exercise extreme caution when traversing these paths. Stepping off the designated boardwalks is strictly prohibited, not only for wetland vegetation protection but also to avoid getting stuck in muddy terrain and potential disorientation.

The perceived temperature will remain around 15 to 17 degrees Celsius throughout the day. Hikers should carry a quick-drying base layer, a light fleece or softshell as a mid-layer, and a waterproof-breathable rain suit. Getting wet from the afternoon drizzle will lower your body temperature. While visibility is currently excellent, be prepared for potential dense fog on the plateau as the drizzle persists, making a map, compass, and GPS essential.

Risks of lightning and strong winds are low. However, temperatures will drop to around 13 degrees Celsius overnight. Even for day trips, warm clothing for evening chills is a mandatory item.