At Chojidani (at an altitude of 640 m) in the eastern part, located approx. 300 m higher in the altitude than the premises of the administration building, the yearly air temperature average is approx. two degrees lower than the average for the administration building, and the yearly average of rain fall is around 400 mm to 600 mm more than the average for the administration building.
標高が事務所構内より約300m上昇する東部の長治谷(標高640m)では、事務所構内に比べて年平均気温が約2℃低く、降水量も400-600mm程度多くなる。