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The objectives this paper were to monitor and analyze the parameters: temperature, relative humidity, air speed and direction wind, to understand as occurred the main frames of discomfort or thermal comfort in two contrasting periods of the 2009 (summer and winter) in Ourinhos. In different environments were installed measuring instruments to measure the meteorological variables. The Beaufort scale allowed classifying speed wind. From the Excel application and from the Software Surfer 8 performed the analysis of variables. Finally, from the diagram of human comfort it was found the points of greatest vulnerability to adverse weather conditions. It was possible to verify that the chosen points are shown in accordance with the expected characteristics, in other words, different structures of the environment affect systematically the dynamics of climate. Thus, Ourinhos, São Paulo State, has a tendency to present phenomena as heat islands. It can be concluded that the production of space of this city has favored the framework of environmental degradation and social. [ABSTRACT FROM AUTHOR]