Greymouth 54 °F Cool. Feels Like: 54 °F Forecast: 69 / 50 °F Wind: 4 mph ↑ from Southeast Region: West Coast Region High: 54 °F Greymouth Region Low: 54 °F Greymouth Max Wind: 4 mph Greymouth °F Weather in West Coast (1 Location) Greymouth * Mon 6:20 am 54 °F Need some help?