Oyasu Onsen Weather (Next 3 days): The snow forecast for Oyasu Onsen is: Heavy rain (total 28.0mm), mainly falling Sun afternoon. Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 6°C on Mon morning, min -2°C on Mon night). Winds decreasing (strong winds from the WSW on Mon morning, light winds from the W by Tue night).
Oyasu Onsen Weather (Days 4-6): Moderate rain (total 14.0mm) on Wed night. Becoming colder with heavy fall of snow, heaviest during Fri morning. Freeze-thaw conditions (max 3°C on Wed night, min -6°C on Fri morning). Winds increasing (calm on Thu morning, fresh winds from the NW by Fri afternoon).