New South Wale's climate varies greatly from the Eastern seaboard to its inland borders.
New South Wales lies in the temperate zone and the climate generally has no extremes of heat and cold. The greatest heat is usually experienced in the north-west; where Bourke recorded a temperature of more than 51 degrees celcius in the shade.
The coldest region is the Snowy Mountains, where winter frosts and snow are experienced over long periods. Rainfall varies widely over the state, gradually diminishing to an annual average of 180 mm in the far north-west.