The state of Sergipe possesss predominantly hot temperatures, obeying the common physical controls that low the latitude, the sea chains throughout the coast, the topographical effect and the continentalidade, elements these related to the system of atmospheric circulation. Being that the temperature decline is associated with the 250 the superior rises m and with other factors as cloudiness, the rainy station and the intensity of winds, these facts take the belief that the winter is rainy station and of that the summer is the dry station. The microregion of Aracaju field of accomplishment of the research, for being a littoral area has its climate affected for the littoral breezes that during the day blow of the sea for the land, had to the biggest heating and minor terrestrial pressure. This dumb breeze its position at night blowing of the land for the sea, where it has a bigger heating of the water of the sea in relation to the continent, these littoral breezes rare backwards rains and has a great importance in the summer alliviates in it of the intense heat. The predominant climate in the microregion of Aracaju is the submido one, climate this that encloses the sergipano coast all. In the microregion in October residual rains occur that are decurrent of the influence of the oceanic surface through the temperatures of waters. The city of Aracaju has its differentiated climate of the too much cities of the microregion being modified by the urban structure that is resulted of the population concentration associate to an increase of number of constructions. These together elements to the winds, rain and the temperature in small spaces generate the microclimates, that if differentiate some aspects in accordance with as use of the ground and tracing of the road net. The resultant heating of aspects as constructions and pavement of streets comes consequently causing the reduction of Albedo and provoking constant heat during the year.