New in softcover. Hardcover was published in 2023. This book clarifies the climatic variations in Japan from the historical period to the present based on documentary sources and meteorological data. How is the climate of Japan, and how was the climate during the Little Ice Age in Japan as compared with conditions in Europe and America? When did meteorological observations start, and who (which country) introduced them to Japan? Why did so many natural disasters occur in Japan, and what caused them? This book answers these questions as specifically and objectively as possible using both figures and photographs, which are beneficial to students and the general public who are interested in historical and current climatic change in Japan, as well as professional climate scientists.