稜線は風冷え。9合目以上は慎重な足運びを

Mount Rishiri summit conditions are currently cloudy with a temperature of 3 degrees Celsius, feeling below freezing. Daytime high temperatures will only reach 6.2 degrees Celsius, with gusts approaching 15 meters per second. These winds combined with high humidity will significantly lower the perceived temperature. A quick-drying base layer, a thick fleece mid-layer, and a windproof, waterproof hard shell as an outer layer are essential. Gloves and a warm hat are also mandatory.

With no snow cover and no precipitation, the ground will be primarily wet with exposed rock. The fragile volcanic scree terrain from the 9th station to the summit may be slippery due to moisture. Strong winds will make maintaining balance difficult in these areas, requiring careful foot placement.

While the risk of lightning is low, hypothermia is a serious concern. Perceived temperatures will remain below freezing throughout the day, dropping further after 3 PM. Always put on an insulating layer during breaks and maintain energy with snacks. Visibility is currently good at 4.6 kilometers, but be aware of the potential for sudden dense fog development due to sea winds, a common risk for this isolated island peak.