日中は雨と霧。濡れた岩場は滑りやすく視界不良

Current conditions at Tateyama Summit are mostly clear, but visibility is less than 1km due to fog, with a temperature of 11.4°C. There is a 4°C temperature difference from the base. The morning will remain partly cloudy, but light rain is expected to begin around noon, intensifying through the afternoon.

For daytime activities, the rocky ridge route from Murodo via Ichinokoshi to the summit of Oyama will become wet and slippery. The risk of falling rocks from Ichinokoshi is particularly heightened by poor visibility. Visibility is likely to worsen in the afternoon, increasing the risk of getting lost. Although temperatures will hover around 11°C, getting wet from the rain will significantly lower the perceived temperature, increasing the risk of hypothermia.

For climbing, ensure you wear a moisture-wicking base layer, a thin fleece mid-layer, and a waterproof-breathable rain suit (jacket and pants) as an outer layer. Carry gloves and a hat, and implement cold weather protection before getting wet. The ground will be wet to muddy, so wear waterproof hiking boots. Trekking poles are also effective for slippery terrain. Given the persistent poor visibility, avoid pushing for the summit if conditions deteriorate, and do not hesitate to turn back. While the risk of lightning is low, extreme caution is advised for daytime activities. Rain is expected to cease and conditions improve overnight.