Thermal comfort is a person’s state of mind that expresses a person’s level of satisfaction with his environment. Optimal thermal comfort can be achieved by considering several factors, including building orientation, air conditioning, position and size of openings, building materials, and others. The purpose of this study is to find recommendations for designing thermal comfort in cities on the island of Java using Mahoney Tables. Mahoney Tables is a collection of reference tables used in construction as climate-friendly design references. In this study, climate and meteorological data will be taken in certain cities on the island of Java. From the results of the above discussion, it can be concluded that the building must pay attention to 4 aspects, namely openings, the building must have wide openings located on the south-north side of the building and the openings must be as high as the human body; The room must be one room without a partition; Building envelopes, buildings must be protected from direct sunlight and rain by paying attention to the selection of materials; and building utilities must pay attention to drainage. The recommendations above are expected to be used by architects/researchers who will design/research buildings to be comfortable.