[15] analyzed, through test cells, the effects of night ventilation associated with the thermally insulated building roof and verified a significant reduction in the interior temperature. Radiation cooling occurs when the radiation emitted by the sun is reflected, thus reducing heat gains inside the building. [PERSON] et al. [16] tested a radiation cooling system by painting the roofs with a reflective paint to obtain cold roofs. According to the authors' analysis, the temperature of the coated surface lowered 20 \({}^{\circ}\)C and the internal temperature of the building decreased by 2.3 \({}^{\circ}\)C, when compared to the temperature obtained without any treatment. These differences resulted in savings in the electrical energy consumption for cooling by 54%. In terms of the impact of passive measures in the cooling demand, [PERSON] et al. [17] analyzed the influence of some passive cooling techniques on the use of electricity in homes in a city with a Mediterranean climate. The study included monitoring and numerical simulation. The results showed that the combination of natural ventilation with horizontal shading devices was able to ensure the thermal comfort of the occupants and also minimize the consumption of electrical energy that was previously used for cooling. [PERSON] et al. [18] examined the efficiency of passive cooling techniques with reflective materials in buildings in the Southeast of Asia, in a hot and humid climate. The evaluation was mainly focused on the heat dissipation by the roofs, as the authors considered that 70% of the total heat gain in a building was due to them. It was concluded that the implementation of reflective passive cooling approaches in roofs allowed the improvement of the buildings capacity to dissipate heat, reducing the effect of solar radiation in the internal gains. However, the authors warned that in order to achieve the effectiveness of the techniques, some factors should be considered, such as the type of building, its occupancy patterns and the climatic conditions. For this reason, an inadequate selection of the passive cooling technique could lead to a degradation of the quality of the indoor environment due to thermal discomfort. Regarding the Brazilian case, some recent studies were carried out on the use of passive cooling techniques, such as [PERSON] et al. [19], [PERSON] [20] and [PERSON] [21], who analyzed the effect of natural ventilation, and [PERSON] et al. [22] and [PERSON] [23], who evaluated the impact of using reflective paint on the roof of buildings. The literature review showed that the use of passive cooling techniques is a strategy with high potential in hot climates. Additionally, it was found that these techniques are normally associated with buildings with high thermal inertia where mass also plays an important role in temperature stabilization. However, there is a current trend in several regions towards an increase in less massive construction, with possible consequences for the efficiency of passive cooling strategies. Thus, evaluating the impact of passive cooling strategies on low thermal inertia buildings is important and constitutes an innovative contribution to the technical and scientific community. This paper aims to evaluate, in a region with a dry and hot climate, the efficiency of passive cooling techniques such as: shading of glazed openings, application of a low-emissivity reflective film, natural cross ventilation and painting of opaque elements with reflective paint. The effect of the combination of some of the above techniques was also evaluated; namely, reflective painting associated with natural cross ventilation, reflective painting associated with natural cross ventilation only at night and reflective painting associated with natural ventilation by chimney effect. The impact on the indoor temperature is analyzed and paves the way for a discussion regarding the contribution of these techniques for the energy efficiency of buildings in terms of cooling demand.