Conditions at Mullaghmore Head in December
December: Winter's Heavyweight Champion
December delivers the full fury of a northwest Irish winter. Average swell is 5-6ft (1.7m) and the period is 12.2s - long-period, powerful and often pumping. The swell rose is packed with WNW (27%), W (20%), NW (13%), and NNW (9%), and the height distribution shows a large slice of 1.5-2.5m energy, with over 2.5m starting to appear more regularly. These are the XXL conditions that put Mullaghmore on the world stage. Winds are favorable enough to make it work: S (10%), SSE (10%), SSW (10%), SW (10%), and WSW (9%) make up the dominant flow, and ideal wind sits at 33 percent. The challenge is the weather: average air temp is 7.4°C, water is 9.4°C, and frequent Atlantic lows bring 4.79mm/day of rain. When the wind clocks around to S/SW and a long-period NW groundswell is rolling in, December offers some of the biggest, heaviest and most unforgettable surfing Ireland has to offer.
Average Spot conditions at Mullaghmore Head in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Mullaghmore Head during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Mullaghmore Head for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mullaghmore Head for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Mullaghmore Head.