Abstract
In Japan, tourism is becoming an important industry due to the aging society and the government is implementing policies to promote Japan as a tourism nation. However, few studies on quantitative data analysis have been conducted on nationwide tourism activities. This study examines past trends on domestic tourism in Japan. The authors investigate trends on domestic tourism and examine primary factors influencing number of overnight stays through a time-series analysis on individual data from tourism statistics. The analysis produces valuable results offering useful insights for tourism policies.