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Conditions at Porth Neigwl in May
May: Clean Spring Corn
May brings a noticeable shift to smaller, more user-friendly conditions. Average swell height is 4-5ft (1.2-1.5m) with the period easing to 9.1s, so the power drops but the shape can still be good. The waverose remains W-dominated (24.5%) with WSW at 17.4% and WNW at 12.9%, but the bulk of the energy falls in the 1-1.5m class, with plenty of 0.5-1m waves as well. Ideal offshore wind is at 22%, and wind speeds are generally light, especially in comparison to winter. This is the month when the west coast starts to feel like spring - air temps climb to 11.9°C, water temp matches at 11.9°C and precipitation is the lowest of the year at 1.99mm/day. Bring the fish or longboard and enjoy long, clean walls on the better swells.
Average Spot conditions at Porth Neigwl in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Porth Neigwl 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 Porth Neigwl for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porth Neigwl 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 Porth Neigwl.