Weather is probably a major factor when you plan your trip to Anabara 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 22°C, while the coldest months are January and February, with an average of 1°C. The rainiest months in Anabara Onsen are September, August, July and October, with each month seeing an average of 208 mm of rainfall.