Metropolitan City of Cagliari  The Metropolitan City of Cagliari () is a metropolitan city in Sardinia, Italy. Its capital is the city of Cagliari and includes 17 comuni. It was established by law in 2016 and replaced the Province of Cagliari. The current president is the mayor of Cagliari, Paolo Truzzu. The resident population is approximately 432,000. This figure can rise due to commuting into the functional urban area to approximately 477,000  The Metropolitan City of Cagliari extends over the southern part of the Campidano plain, between two mountain ranges. The Sulcis Range is to the west and includes Monti Arcosu, , and Punta Sebera. To the east is the Monte Linias Range, including and Sette Fratelli. These mountains are composed of Ordovician shale and Carboniferous granite and do not exceed . An exception is which is . The Metropolitan City of Cagliari has a Mediterranean climate with hot, dry Summers and mild Winters. It is unusual for Summer temperatures to rise above , often with high humidity, while in winter, the record lows are below zero. Heavy snowfalls occur rarely; on average, every thirty years. January is the coldest month with an average temperature of about . August is the warmest month with an average temperature of that of about . African anticyclone activity can cause heat waves starting in June. From mid-June to mid-September rain is rare and appears in afternoon storms. The rainy season starts in September, but the first cold days come in December, usually the wettest month. Winds are frequent, especially the mistral and sirocco; in Summer days a marine sirocco breeze ("s'imbattu") lowers the temperature and the humidity. On the surrounding mountains, the climate is very different with plentiful average rainfall, cold winters, and mild warm summers (Csb in the Köppen climate classification). As 470 km2 are covered by forests, lagoons, ponds and salt marshes, the really populated area is 777.8 km2. So the real population density rises to 553 inhabitants/km2. In 1861, the municipalities of the current metropolitan city had 67,063 inhabitants, while the city proper had 33,491. Since then the city had a population growth of 461%, while the metropolitan municipalities as an all had an increase of 644%.