新緑の筑波山。午後は岩場に湿り気注意

At 7 AM, Mt. Tsukuba summit recorded 9.1°C with a feel of 7.8°C under mostly clear skies and excellent visibility. Temperatures are expected to rise, reaching 15.7°C by 3 PM. Winds will remain light throughout the day, with gusts peaking at around 7.5 m/s, posing no significant hazard to movement.

Ground conditions are generally dry. However, with high humidity and increasing precipitation probability from 55% to 88% in the afternoon, although no actual rainfall is forecasted, expect dampness. Specifically, on routes featuring numerous unique rock formations and odd-shaped stones, sections of exposed rock may become wet, increasing the risk of slips. Exercise caution, especially in shaded areas and along stream beds.

For layering, a quick-drying base layer, a light fleece mid-layer, and waterproof/windproof outerwear (rain gear) are recommended. While you may feel warm during active periods, the mid-layer will be crucial during breaks and in the cooler morning and evening hours. Essential gear includes water, snacks, and a headlamp for emergencies. Neither crampons nor microspikes are necessary.

While risks from thunderstorms or strong winds are low, the rising humidity and afternoon precipitation probability indicate a potential for weather changes. Note the approximately 4°C temperature difference between the summit and base. Adjust your layers frequently to manage body temperature and ensure a safe descent.