鳥海山日中は展望良好夕方から雨風

This morning, Chokai-zan summit is cloudy with a temperature of 12.1°C, feeling like 10.7°C, and high humidity at 99%. Visibility is currently limited to 3.9km. However, the weather is expected to improve throughout the day, transitioning from partly cloudy to mostly clear, with sunny skies anticipated by mid-afternoon. Temperatures will rise to a maximum of 16.8°C, offering good views. Winds will remain relatively light during the day, with gusts up to approximately 14m/s.

Main trails are expected to be dry as there is no precipitation and sunny conditions are forecast. Nevertheless, Chokai-zan, being an isolated peak, experiences high humidity, and despite a gradual decrease from this morning's 99%, some sections may remain wet from moisture or snowmelt. The rock formations around Shinzan are dry, but hikers should still be cautious of loose rocks. For layering, a quick-drying base layer, a fleece mid-layer, and a windproof and waterproof outer shell are essential. Gloves and a hat are also recommended. Crampons or microspikes are not necessary.

Given Chokai-zan's exposure to the Sea of Japan, even with calm daytime winds, the long ridge routes, such as those from Hokodate Course towards Shinzan, can feel significantly colder due to wind chill. Regular breaks and hydration are crucial. While the risk of lightning is low today, the weather is expected to deteriorate in the evening. Precipitation probability increases after 18:00, with light drizzle by 21:00 and rain by midnight. Winds will also strengthen, with gusts reaching 22m/s overnight, making evening and night travel inadvisable. Limit your activities to daylight hours and plan to descend by 15:00 at the latest.