variavel0=Lidiane Alves Oliveira - lidianea@uol.com.br UNESP Luiz Roberto Carrocci - carrocci@feg.unesp.br UNESP Enos Arneiro Nogueira da Silva - enos@feg.unesp.br UNESP Abstract. Inside the building where the Department of Civil Engineering of UNESP, campus of Guaratinguetá, is located, differences in the thermal conditions of rooms were observed. Two rooms which possess the same kind of windows, though facing opposite directions, were chosen as representative of the building, so that a thermal accompaniment seeking to collect internal and external temperatures during the seasons of the year was performed. Through a radiometer located inside the campus, in open area, radiation data were obtained which, associated to the city solar diagram, enabled a study of the building heatstroke. In each studied environment, the thermal load which, associated to the other collected information, led to a rigorous analysis of thermal condition variation in the building was still determined, making it easier to point out solutions for a better thermal comfort as well as a rational consumption of energy in the conditioning environments. Keywords. thermal comfort, thermal load, solar radiation, building and enviroment.