Milan is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city has 3.26 million inhabitants. Its continuously built-up urban area, which stretches well beyond the boundaries of the administrative metropolitan city and into Switzerland, is the fourth largest in the EU with 5.27 million inhabitants. According to national sources, the population within the wider Milan metropolitan area (also known as Greater Milan), is estimated between 8.2 million and 12.5 million making it by far the largest metropolitan area in Italy and one of the largest in the EU.

Milan is considered a leading alpha global city, with strengths in the fields of art, commerce, design, education, entertainment, fashion, finance, healthcare, media, services, research and tourism. In terms of GDP, Milan is the wealthiest city in Italy, has the third-largest economy among EU cities after Paris and Madrid, and is the wealthiest among EU non-capital cities. Milan is viewed along with Turin as the southernmost part of the Blue Banana urban development corridor and one of the Four Motors for Europe.

The city has been recognized as one of the world's four fashion capitals. Milan is located in the north-western section of the Po Valley, approximately halfway between the river Po to the south and the foothills of the Alps with the great lakes (Lake Como, Lake Maggiore, Lake Lugano) to the north, the Ticino river to the west and the Adda to the east. The city's land is flat, the highest point being at 122 m (400.26 ft) above sea level.Parks and gardens.

Milan features a mid-latitude, four-season humid subtropical climate (Cfa), according to the Köppen climate classification. Milan's climate is similar to much of Northern Italy's inland plains, with hot, humid summers and cold, foggy winters. The Alps and Apennine Mountains form a natural barrier that protects the city from the major circulations coming from northern Europe and the sea. During winter, daily average temperatures can fall below freezing (0 °C [32 °F]) and accumulations of snow can occur: the historic average of Milan's area is 25 centimetres (10 in) in the period between 1961 and 1990, with a record of 90 centimetres (35 in) in January 1985. In the suburbs the average can reach 36 centimetres (14 in). The city receives on average seven days of snow per year. Summers in Milan are hot and humidity levels are high with peak temperatures reaching above 35 °C (95 °F). Due to the high humidity, urban heat effect and lack of wind, nighttimes often remain muggy during the summer months. Usually the summer enjoys clearer skies with an average of more than 13 hours of daylight:  when precipitation occurs though, it is more likely to be accompanied by thunderstorms and hail. Springs and autumns are generally pleasant, with temperatures ranging between 10 and 20 °C (50 and 68 °F); these seasons are characterized by higher rainfall, especially in April and May.