Conditions at Mullaghmore Head in May
May: Smaller, Punchier Summer Swell
May officially moves into shoulder season. The average swell falls to 3ft (0.9m) and the period drops to 9.6s - the beginning of shorter-period, less organized energy. Swell direction still favors WNW (26%), NW (20%), NNW (20%) and W (16%), but the height distribution is heavily loaded in the 0.5-1m range, with only modest 1-1.5m waves. That means clean, fun-sized surf if you catch a good wind window. The problem is wind: NNW becomes the most common single wind direction at 11%, while the S/SSW/SW offshore quadrant accounts for only about 24 percent of observations. Ideal wind drops to 24 percent, the joint lowest of the year. When it all lines up - a WNW swell and a SSW/SW breeze - you'll find excellent longboard waves and the occasional punchy reef wave, but there are more flat days than not. Air temps climb to 10.9°C, water to 11.6°C, and rainfall is at its lowest, making May a pleasant but inconsistent month.
Average Spot conditions at Mullaghmore Head in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Mullaghmore Head during May. 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 May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mullaghmore Head for May. 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.