Kwan Wen-yen points out that the first is climate. In many locations, at certain times of the year, it could easily snow or rain on an event, leaving tens of thousands of rabid fans disappointed. Thus there is often mass support for the construction of indoor facilities.
對各國巨蛋曾深入研究的台北市立體育場秘書官文炎指出，第一就是氣候因素，每當大型職業球賽舉行，在各州常有雨雪的侵擾，大批狂熱的球迷常因沒有合適的室內場地舉行比賽，大感失望，興建大型室內球場成為眾望所歸。