山頂は穏やかな初夏。夕刻の気温低下に注意

Niseko Hirafu summit enjoys clear skies and mild early summer conditions today. As of 8:00 AM, the summit temperature is 14.7°C, feeling like 13.4°C. There is a 6°C temperature difference from the base of the ski resort. Temperatures are expected to rise further, reaching around 18.4°C near the summit by noon. Winds will be southerly, with gusts up to approximately 9.5 m/s, which should not significantly impede movement along the ridge lines. Visibility is excellent, exceeding 20 km, offering clear views of Mt. Yotei and surrounding peaks from the summit. The hiking trails are free of snow and remain dry. Crampons or microspikes are unnecessary, but sturdy trekking shoes are essential for varied terrain.

Temperatures will drop sharply from late afternoon into the evening, with a decrease of over 10°C expected overnight, falling into single digits. Be prepared for sudden changes in conditions by carrying an extra insulating layer from the start. Especially when ascending the Hirafu ski slopes towards the summit, a fleece or a light down jacket is crucial for warmth during breaks or in windy sections.

Today's hike should prioritize an early start and an early finish to take advantage of the favorable daytime weather. The risk of hypothermia increases significantly after sunset, so ensure you complete your descent before nightfall. Be proactive in making decisions to turn back if conditions change unexpectedly. For daytime layering, a wicking base layer, light mid-layer, and wind shell are sufficient, but always carry extra insulation.