 The largest commercial centres outside of the CBD are North Sydney and Chatswood in the north, Parramatta to the west, Liverpool in the south-west, Hurstville in the south, and Bondi Junction to the east.There has been accelerating commercial development in Parramatta since the 1950s as firms serving Western Sydney have set up regional offices and recognised the region's significant residential population mass and cheaper rents.Sydney has a humid subtropical climate ("Cfa") with warm, sometimes hot summers, and winters shifting from mild to cool.