Abstract
The annual precipitation in Japan, generally speaking, is not constant as one would expect, but fluctuates within a wide range from year to year, which fact is important not only from the climatological point of view but from the industrial and economic as well.
The writer calculated the rainfall variability for ninety six stations in Japan and neighbourhood after Maurer's scheme.
The geographical distribution of the variability as represented on a map (Fig. 1), when studied, give very interesting results.
In the Japanese Islands, the pacific side has greater variability compared with the Japan Sea side and the variability increases from south to north. Hokkaido, Karahuto (Sakhalin), and Tyôsen (Korea) have relatively high variabilities. These numerical values are shown in tables.
