This thesis is a study of the consistency of the forecasting in the Theravada Buddhist scriptures and Thai Astrology. The three main objectives of the study are the principles of Astrology in Theravada Buddhism. The Astrological principles are listed in Thai astrological texts, and to examine the consistency of the forecasts in Theravada Buddhism.

The results of the research are found that the forecast is coupled with the global societies. In the past era, the influence of Hinduism and Brahmin are highly relative in India which is the origin of Buddhism but the forecast is the knowledge of the Brahmins. According to the Vedic Scripture, the Brahmins are the prophers. As shown in Theravada Buddhist scriptures, the 8 Brahmins predicted Prince Siddhatha. About the forecast, our Lord Buddha used his knowledge perfection to forecast the human beings. It is not concerned about the Astrology principles.

Thai Astrology’s had long history. There are its own theories and principles, nowadays the influence of Astrology is widespread in our societies.

The harmonization between Theravada Buddhism and Thai Astrology are in many ways such as the believe in, moral, ethics and the forecast. There are some doctrines to explain Astrology in four elements, Kamma and life cycle, the analysis of these doctrines with the right belief showed that Astrology can not give the complete truth, because human being has the right to do anything. 

The benefits of Astrology were to make the profound understanding of human personality and potential that bring to proper direction of an individual and harmonious relation among people, to be the tool for counseling, and in order to understand the law of nature, especially the law of Kamma.