From Westport, take the road west towards Louisbourgh. Carrowinskey is about 5 Kms further on that roads, facing out into the Atlantic. Other beaches nearby include cross beach and Killadoon.
compared to many other west facing waves in Mayo, it holds a decent wave in frequent on-shores. It comes into its own in easterly off-shores when hollow waves make it one of ireland's classic beach breaks. Still has few crowds probably due to its relative isolation.