快晴の利尻山。9合目以上は足元に注意

Rishiri-zan offers clear skies and favorable conditions for today's ascent. The summit currently reports a temperature of 7.4°C, feeling like 5.4°C, with negligible wind at 0.8 m/s. Temperatures are expected to rise to 10.7°C by noon. Visibility is excellent, exceeding 20 km, promising panoramic views.

Ground conditions are generally dry due to no recent precipitation and mild temperatures. However, climbers must exercise extreme caution on the exposed and fragile volcanic scree from the 9th station to the summit, particularly along the popular Oshidomari Course and Kutsuugata Course. Be mindful of loose footing and potential rockfall on these steep sections, requiring careful step placement.

The apparent temperature during daytime activity will range from approximately 5°C to 8°C. Essential layering includes a wicking base layer, a mid-layer such as fleece or a light down jacket for insulation, and a wind and waterproof outer shell. This setup is crucial for protecting against temperature drops during breaks or at higher elevations. Rain gear is essential, even with clear skies. Crampons or microspikes are not required given the current conditions.

While the risk of thunderstorms is low, temperatures will drop to around 4°C after sunset, and winds will slightly pick up. Plan your ascent to ensure a safe return before nightfall to avoid the colder evening conditions.