Over half of New South Wales has an arid or semi-arid climate. The eastern portion has a temperate climate, ranging from humid subtropical from its northern border to the Central Coast and most of Sydney, and oceanic to the south coast. The Snowy Mountains region in the south-east falls in the alpine climate or subpolar oceanic climate zone, with cool to cold weather all year around and snowfalls in the winter. Further inland, the climate is semi-arid and a desert climate towards the western part of the state.