Wind forecast Portmarnock today

Wind in Portmarnock right now

Meteogram and wind rose for Portmarnock

Next 48 hours, hour by hour

Mean wind through the next 48 hours runs between 10 and 24 km/h (6 to 15 mph), mostly from the SW. The strongest gust is 44 km/h (27 mph) at Sun 14:00. Speeds are in km/h with miles per hour underneath. Direction is where the wind comes from.

Seven-day gust outlook

The windiest day of the week is Fri 9/10 with gusts to 51 km/h (32 mph). The calmest is Tue 6/10, gusts to 27 km/h (17 mph). Later days are less certain than the first two: the further out, the more the models can disagree.

What the wind does in Portmarnock

Portmarnock, or Port Mearnóg, is located on the coast in County Dublin, where the mean 10-metre wind speed is approximately 4.5-6 m/s along the coast and 3.5-5 m/s inland. As a coastal location, Portmarnock will generally experience higher wind speeds than inland areas of the county. Gusts, which are short-term increases in wind speed, will typically exceed the mean wind speed. The prevailing wind direction for County Dublin is westerly. While the east coast of Ireland is partly sheltered from the strong Atlantic depressions that bring westerly gales, spring easterlies and summer sea breezes are characteristic patterns for the Irish Sea. A sea breeze can develop on summer afternoons, potentially adding 2-4 m/s to wind speeds near the coast and shifting the wind direction onshore.

Seasonal pattern

The seasonal wind pattern in Portmarnock generally follows that of County Dublin. Winter typically brings stronger winds, often associated with westerly gales, though the east coast offers some degree of shelter from these. Spring can see distinctive easterly winds, influenced by Irish Sea weather patterns. Summer afternoons, particularly near the coast, are frequently affected by sea breezes, which can increase wind speeds and alter direction. Autumn transitions between these patterns. Throughout the year, the passage of Atlantic depressions can bring periods of strong winds and gusts. The overall wind climate is influenced by its coastal position on the east of Ireland, resulting in a different exposure profile compared to the west coast.

Exposure and shelter

Portmarnock is a coastal town, approximately 1 km from the coast, which means it is exposed to winds coming off the Irish Sea. The exposure of any specific location within the town will depend on local topography and built environment. Buildings and other structures can provide shelter, creating areas of reduced wind speed in their lee, but can also cause funnelling effects in narrow passages, leading to localised increases in wind speed. While County Dublin is sheltered from the full force of Atlantic winds, it is strongly influenced by sea breezes. Elsewhere in the county, features like Howth Head are noted for gust hotspots, and Dublin Bay can experience squally easterlies, indicating the varied coastal exposure within the county.

Local uses of the wind forecast

Accurate wind information is valuable for various activities in and around Portmarnock. For sea uses such as those at Portmarnock Strand or Malahide Estuary, understanding wind speed and direction is important for planning activities. For the nearby Portmarnock Golf Club, wind can significantly affect play. In the broader county economy, sectors such as aviation (with Dublin Airport nearby), ports, and construction are sensitive to wind conditions. Building and roofing work, for example, requires consideration of wind for operational safety and material handling. For walking, wind speed and direction, particularly when combined with temperature, contribute to the wind chill factor, affecting comfort.

Near Portmarnock

Portmarnock is in Co. Dublin, one of 28 towns we publish for the county. The nearest observing stations are Dublin Airport (7 km), Dublin Airport EIDW (METAR) (9 km) and Phoenix Park (16 km). The closest wind farm in our guide is Raheenleagh Wind Farm, about 71 km away.

Nearest spots

Questions about wind in Portmarnock

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Set your own limit and watch the odds at the live instrument for Portmarnock, or read how the numbers above are made.