Greymouth (ˈɡreɪmaʊθ) (Māori: Māwhera) is the largest town in the West Coast region in the South Island of New Zealand, and the seat of the Grey District Council. The population of the whole Grey District is , which accounts for % of the West Coast's inhabitants. The Greymouth urban area had an estimated population of A large proportion of the District, 65%, is part of the Conservation Estate owned and managed by the Department of Conservation making Greymouth a natural centre for walkers and trampers. The town is located at the mouth of the Grey River, on a narrow coastal plain close to the foot of the Southern Alps. In clear weather, Aoraki / Mount Cook can be clearly seen to the south from near the town. The mouth of the river divides the town into three areas: Blaketown, close to the river's mouth on the south bank; Karoro, to the southeast, separated from Blaketown by a series of small estuarine lagoons; and Cobden, formerly a separate town, on the river's north bank. Greymouth is on , which connects it with Hokitika in the south and Westport in the north. It also stands at the terminus of , which runs through Dobson and Reefton, eventually reaching North Canterbury and its junction with State Highway 1 at Waipara, north of Christchurch, via Lewis Pass. Highway 73 is accessed south of Greymouth, which is the most direct route to or from Christchurch. The town is also the western terminus of the Midland line from Christchurch. Large coal trains often operate from Greymouth on this line to Christchurch. The famous TranzAlpine train also terminates at Greymouth. The Greymouth Airport is only south of the centre of the town. Köppen-Geiger climate classification system classifies its climate as oceanic (Cfb). The mean annual rainfall Greymouth receives is high by New Zealand standards and is distributed relatively evenly throughout the year. This is due to its position receiving marine westerlies throughout the year that often do not rise above the Southern Alps.