夏のトマム、午後は霧雨。濡れた路面と気温低下に注意

The summit reports cloudy conditions with a temperature of 16.8℃. The base, at 20.6℃, shows a temperature difference of about 4℃. Cloudy skies will prevail throughout the day, but light drizzle is forecast from around 3 PM. This drizzle will make the ground around Unkai Terrace wet and potentially slippery in places.

Caution is advised for the afternoon drizzle and the rapid temperature drop, with a projected 11℃ decrease at the summit during the forecast period. Be prepared for sudden changes in conditions by carrying an extra insulating layer from the start. Especially from evening onwards, temperatures will fall below 10℃, dropping to 7℃ overnight, making it crucial to decide on an early return.

The daytime feels-like temperature at the summit will be in the mid-16s, rising to around 18℃ in the afternoon, which is relatively mild. However, getting wet will lower the perceived temperature. A wicking base layer, an insulating mid-layer such as fleece, and a waterproof-breathable outer shell (rain gear) are essential. For the evening chill, a light down jacket is also recommended. While the risk of lightning and strong winds is low, visibility may be reduced due to the drizzle. The risk of hypothermia increases with the evening temperature drop and drizzle, so proper insulation is vital for safety.

The ground will be generally wet, with no snow accumulation. Crampons or microspikes are not necessary, but choose non-slip trekking shoes and proceed with caution.