Oyasu Onsen Weather (Next 3 days): The snow forecast for Oyasu Onsen is: Heavy rain (total 26.0mm), mainly falling Mon morning. Becoming colder with a light covering of snow, mostly falling on Mon afternoon. Freeze-thaw conditions (max 6°C on Mon morning, min -2°C on Mon night). Winds increasing (light winds from the SW on Sat afternoon, fresh winds from the W by Mon morning).
Oyasu Onsen Weather (Days 4-6): A moderate fall of snow, heaviest on Tue night. Turning milder with moderate rain (total 13.0mm), heaviest on Wed night. Freeze-thaw conditions (max 3°C on Wed night, min -5°C on Thu night). Winds increasing (light winds from the NW on Thu morning, fresh winds from the NW by Thu night).