Wicklow Harbour sits on the east coast of Ireland roughly twenty miles south of Dublin Bay, at the mouth of the Leitrim River.

It comprises an inner and outer harbour: the outer harbour is formed by the East and West walls extending from the river's banks, while the inner harbour is shaped by piers reinforcing the river's north and south banks as far as the arched town bridge.

The middle of the outer harbour is relatively shallow and exposed to northerly and north-easterly swells, though vessels can proceed upriver for additional shelter.

The harbour serves both commercial and fishing interests, with cargo operations handling timber, glass, and scrap metal. Management of the port transferred to Wicklow County Council in 2016.

The Wicklow RNLI has maintained a presence in the harbour for nearly 150 years, operating an all-weather Tyne class lifeboat and an inshore D class lifeboat.

For mariners, the harbour offers secure access day or night on any tide in reasonable conditions, with no immediate offshore dangers.