Weather is probably a major factor when you plan your trip to Oze Hinoemata Onsen, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 17°C, while the coldest months are January and February, with an average of -2°C. The rainiest months in Oze Hinoemata Onsen are July, August, September and June, with each month seeing an average of 303 mm of rainfall.