A small fishing harbour which represents one of relatively few safe anchorages on the South Ayrshire coast, Girvan Harbour lies around the mouth of the Water of Girvan to the west of the town centre. Significant quantities of herring, whitefish and shellfish were once landed here, but as stocks have declined recreational use of the harbour has become more important. Its entrance is protected by a pair of breakwaters and the facility is owned and operated by South Ayrshire Council.
The harbour was defended by an earthen fort in the 16th C., was improved 1869-70 and a new breakwater built in 1881-83. Quays are located along the south bank of the river, although there was once a coal quay to the north. Alexander Noble founded a boat-building and ship-repair yard on the north bank in 1946. A pier was built within the harbour during the 20th C. and harbour facilities were enhanced in 2013 with the development of a 35-berth marina for yachts and other small craft. In 2015 additional facilities for fisherman and a new harbour master's office were opened at a cost of £465,000.
The harbour provides access to the island of Ailsa Craig, with daily tourist trips. Rozelle House gallery in Ayr holds views of the harbour by local artist William Muir (1828-1910).
