This research studies the philosophy of Fudo by Watsuji Tetsuro (1889-1960, Japanese philosopher), attempting to investigate how Watsuji uses Martin Heideggers method of ontological hermeneutics to construct the philosophy of Fudo (i.e. climate and culture). Another aim of this research is to examine the development, limit, and modern significance of Watsujis Fudo philosophy. Thus, having looked into the overall structure of Watsujis Fudo, this research examines the subsequent Fudo philosophies of Hong Yao-xun (1902-86, Taiwanese philosopher during the Japanese Occupation) and Augustin Berque (1942-, contemporary French geographer and orientalist) who are deeply indebted to Watsuji. The ultimate aim of this paper is to raise the philosophical issues Watsujis book implied. First, this paper discusses Watsujis Fudo study of Europe and his critique and inheritance of J. G. Herders philosophy of human climate, highlighting the difference between Watsujis Fudo and Herders philosophy of human climate. Second, this paper analyzes Watsujis discourse of hermeneutic phenomenology that classifies East Asia, Southeast Asia, South Asia, Central Asia, Eastern and Western Europe, and the Mediterranean as three climate types (monsoon, desert, and meadow). This paper then investigates the structure of Watsujis Fudo philosophy. Finally, through Hongs and Berques subsequent Fudo philosophies, this paper considers the modern significance of Watsujis philosophy of Fudo.