Population movement, from rural areas to towns is typical in any developing countries. It is due to general opinion that towns can supply and give everything to support their lives. Seasonal migration in Yogyakarta City is exclusively influenced by the variation of its peripheries. The worse the peripheries, the more the seasonal migrant come. The findings are related to the conditions of the city acting as the pull factors, the conditions and their place of origin acting as the push factors and also the rhythmic pattern of their mobility.