Oyasu Onsen Weather (Next 3 days): The snow forecast for Oyasu Onsen is: A dusting of snow turning to light rain (total 6.0mm) on Fri morning. Very mild (max 14°C on Thu afternoon, min 1°C on Tue afternoon). Winds decreasing (fresh winds from the WNW on Tue afternoon, light winds from the WSW by Thu night).
Oyasu Onsen Weather (Days 4-6): Moderate rain (total 13.0mm), heaviest on Fri afternoon. Very mild (max 18°C on Mon morning, min 8°C on Fri night). Winds decreasing (fresh winds from the W on Sun morning, calm by Sun night).