bay. Cagliari is close to other seaside locations such as Santa Margherita di Pula, Chia, Geremeas, Solanas, Villasimius and Costa Rei. Climate Cagliari has a hot-summer Mediterranean climate (Köppen: Csa), with hot, dry summers and mild winters like other historical regions along the coast. Its precipitation values also bring it closer to semi-arid conditions. The summer extreme values can be slightly over , sometimes with very high humidity, while in winter, under special and rare conditions, the temperature drops slightly below zero. Heavy snowfalls occur on average every thirty years. The average temperature of the coldest month, January, is about , and of the warmest month, August, about . But heat waves can occur, due to African anticyclone, starting in June. From mid-June to mid-September, rain is a rare event, limited to brief afternoon storms. The rainy season starts in September, and the first cold days come in December. Winds are frequent, especially the mistral and sirocco; in summer a marine sirocco breeze (called s'imbattu in Sardinian language) lowers the temperature and brings some relief from the heat. Demographics According to ISTAT, in 2014 there were 154,356 people residing in Cagliari (+3.0% compared with 2011), of whom 71,522 were male and 82,834 female for a sex ratio of 0.86. Minors (children aged 18 and younger) totaled 12.92% of the population, compared to pensioners at 24.81%. The average age of Cagliari residents is 47.44. The ratio of the population over 65 years of age to that under the age of 18, is 53.39%. The elderly population, defined as being over 65 years of age, has increased by 21.95% over the last 10 years. The current birth rate in Cagliari is 6.29 births per 1,000 inhabitants. The average number of people of any age per household is 2.11 and the percentage of households composed of a single person is 42.53%. The population of Cagliari is structured like that of other first world countries, especially as to the prevalence of an elderly population. The trend of these rates in the Cagliari metropolitan area is proportionally reversed in the suburbs, where most younger families move. , 5.8% (8,796 people) of the population was foreign, of which the largest group were Filipinos (17.21%), followed by Ukrainians (10.38%), Romanians (8.42%), Senegalese (8.25%) and Chinese (7.94%). In 1928, during the fascist regime, the neighbouring municipalities of Pirri, Monserrato, Selargius, Quartucciu and Elmas, were merged with that of