Malahide Marina sits on the Broadmeadow Estuary, the only natural tidal inlet on Ireland's east coast, about 14 kilometres north of Dublin city. Sheltered within a narrow, sandhill-flanked inlet, it offers strong protection from most conditions.

Access is tide-dependent due to a shifting sandbar at the entrance, though the channel is well marked with lit lateral buoys and is generally passable for most leisure vessels from around two hours after low water.

The marina holds approximately 350 berths and can accommodate vessels up to 75 metres in length.

An on-site boatyard operates a 30-tonne mobile hoist with capacity for up to 180 vessels, and a covered repair facility provides a full range of maintenance services. Petrol and marine diesel are available at the fuel dock.

The marina monitors VHF channels 37 and 80.