Orewa is a settlement in the northern Auckland Region of New Zealand. It is a suburb of the Hibiscus Coast, just north of the base of the Whangaparāoa Peninsula and 40 kilometres north of central Auckland. The Northern Motorway, part of State Highway 1, passes just inland of Orewa and extends through the twin Johnston Hill tunnels to near Pu…Orewa is a settlement in the northern Auckland Region of New Zealand. It is a suburb of the Hibiscus Coast, just north of the base of the Whangaparāoa Peninsula and 40 kilometres north of central Auckland. The Northern Motorway, part of State Highway 1, passes just inland of Orewa and extends through the twin Johnston Hill tunnels to near Puhoi.