being close to the Viracopos International Airport. More recently, a continuation of Rodovia dos Bandeirantes was implemented through the city, in the region of Jardim Amanda. This highway allowed important access to the municipality through the cloverleaf at the junction with Rodovia Jornalista Francisco Aguirre Proença in an area near the IBM do Brasil company. There is a visible conurbation between Campinas, Sumaré and Hortolândia, without a clear identification of the territorial limits of these municipalities. The socio-economic interdependence for these municipalities is an element of extreme importance in the elaboration of their plans and projects. Geography Relief and hydrography The soil is formed by the decomposition of eruptive rocks, with low density drainage and soils varying from red to yellow latosols, suitable for mechanised agriculture. There are also sandy soils suitable for pastures and occasional crops. In some stretches the layers are sedimentary and the sandstone substrate makes the soil more impoverished, noticeably susceptible to erosion. These characteristics are more noticeable where the terrain is more wavy. The hydrographic basin of the Piracicaba River, the basin in which Hortolândia and the region are located, covers the southeastern part of the state of São Paulo and the extreme south of Minas Gerais and is the main source of water extraction for consumption in the Metropolitan Region of Campinas. The main river that cuts through the municipality is Ribeirão Jacuba [pt]. Climate The Köppen climate classification of the region is humid subtropical climate (Cwa), with decreased rainfall in winter and an average annual temperature of 21.6 °C, having dry and mild winters (rarely too cold) and rainy summers with moderately high temperatures. The warmest month, February, has an average temperature of 24.5 °C, with a maximum average of 30.1 °C and a minimum of 18.9 °C. The coldest month, July, averages 17.8 °C, with a maximum average of 25.0 °C and a minimum average of 10.7 °C. Autumn and spring are transitional seasons. The average annual rainfall is 1384.3 mm, with August being the driest month, when only 21.0 mm occurs. In January, the rainiest month, the average is 279.6 mm. In recent years, however, hot and dry days during winter have been increasingly frequent, often exceeding the 30 °C mark, especially between July and September. In August 2010, for example, there was no rain at all in the city. Dry seasons and Indian summers in the middle of the rainy