Aviles is the name of the third most important city of Asturias, Spain. It is also the name of the municipality which includes the city, which is one of the smallest in the Principality of Asturias. Its length from north to south is 7.5 km, and from east to west it is 6.25 km, giving a total area of 25.34 km². Its main urban centre occupies the flattest land in the municipality, in a land that belonged to the sea, surrounded by small promontories, all of them having an altitude of less than 140 metres.
Situated in the estuary of Aviles, in the Northern Central area of the Asturian coast, west of Peñes Cape, it has an important national seaport and industrial city. It is close to popular beaches such as Salinas.
The area experiences Atlantic, warm summers with both overcast and sunny days. In winter the weather is moderate, with significant rains and wind, although sometimes the cold climate of Asturias results in snowfall at sea level. The temperature is rarely below zero or over 30°C.
Its most characteristic cultural event is the Interceltic Festival of Avilés. That occurs in summer, with people coming from Brittany, Ireland, Wales, Scotland, Galicia and Asturias itself.