Marmaris is a port town and tourist resort on the Mediterranean coast, located in Muğla Province, southwest Turkey, along the shoreline of the Turkish Riviera.Marmaris' main source of income is tourism. It has an exceptional location between two intersecting sets of mountains by the sea, though following a construction boom in the 1980s, little is left of the sleepy fishing village that Marmaris was until the late 20th century. In 2010 the town's population was 30,957, and peaks at around 300,000 to 400,000 people during the tourist season.It is also a centre for sailing and diving, possessing two major and several smaller marinas. It is a popular wintering location for hundreds of cruising boaters, being also served by the nearby Dalaman Airport.ClimateMarmaris has a hot-summer Mediterranean climate (Köppen: Csa) characterised by a hot dry summer and mild rainy winter. Showers and rain are very unlikely between May and October.Summers are hot and dry, and temperatures are especially high during the heatwaves in July and August. October is still warm and bright, though with spells of rain, and many tourists prefer to visit in the early autumn, especially in September, because the temperatures are not as hot.Winters are mild and wet. Winter is the rainy season, with major precipitation falling after November. The annual rainfall can reach to 1,232.7 millimetres (48.531 in); the rainfall is concentrated during scattered days in winter falling in heavy cloudbursts which cause flash floods sometimes in flood prone areas.