Portmarnock is a residential beach break located on the east coast of Ireland, north of Dublin, facing directly into the Irish Sea. The spot features a sandy beach fronting a densely populated suburban area, with a clear demarcation between the town and the water along a developed promenade. The shallow, choppy water conditions indicate exposure to Atlantic swell and frequent wind-driven chop rather than organized wave formations. With average wind speeds of 9 knots and notably low wind reliability at 20.9%, conditions are marginal and inconsistent. Side-shore winds from the north provide the safest setup for this orientation. The spot suits beginners due to weak overall conditions, though the choppy water state demands comfort in rough conditions. Key considerations include tidal influences affecting water depth, proximity to residential areas limiting session length, and the need to watch for occasional rocky features along the shoreline. Most sessions will feature underpowered conditions requiring smaller boards.