The daily ambient temperature of hibernacula for Rhinolophus ferrumequinum in two regions (the Sanpyeong abandoned mine, Seowoon-myeon, Anseong, Gyeonggi and the Beollari-cave, Seongsan-eup, Seoguipo, Jeju) were collected. The mean ambient temperature of the Sanpyeong-ri mine was 7.69±1.19℃ (±SD, range (min.~max. temperature): 4.5~10.5℃) from 9 November 2018 to 17 April 2019. The mean temperature of the Beollari-cave was 6.73±1.76℃ (±SD, range (min.~max. temperature): 4.1~11.9℃) from 29 November 2018 to 6 March 2019.
