Conditions at Porzcarn in May
May: Swells on Hold
May marks the transition into the summer doldrums, but there is still enough pulse left in the Atlantic for a few fun sessions. Average swell height drops to 4ft (1.2m) and the average period falls to 9.4s, signalling shorter-period, less powerful energy. The swell direction is still favourable: W (27.5%), WNW (24.1%) and WSW (14.9%) dominate, but the lion's share of that energy sits in the 2-5ft (0.5-1.5m) band, so Porzcarn becomes a fun-sized, grovel-friendly wave rather than a heavy bowl. Ideal offshore winds are around 19% of the time, while onshore W-NW winds still dominate a third of the time. Air temperatures warm to 13.0°C, water temp rises to 13.7°C, and precipitation drops to 1.93 mm/day. It is a month for small-wave equipment and picking the windows where the sea breeze stays away.
Average Spot conditions at Porzcarn in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Porzcarn 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 Porzcarn for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porzcarn 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 Porzcarn.