Conditions at Playa del Castillo in May
May: Summer Lull Settles In
May marks the start of the low season as the Atlantic high pressure begins to lock in. Average swell height is still 5.2ft (1.6m), but the period drops to 9.5s, so the wave quality shifts from powerful ground swell to more average, punchy windswell. The direction becomes very north-heavy: NNW is 50.0%, N 21.5%, and NW 13.4%, with almost no true west or WNW energy left in the window. Wind conditions are dominated by NNE flow at 39.7% and N at 19.0%, reducing ideal wind to just 10%. This is a month for small-wave equipment, groveling, and picking off the sets that wrap into the beach during the lighter morning breeze. Water temperature reaches 20.1°C, air temperature averages 19.7°C, and precipitation is nearly absent at 0.08mm/day.
Average Spot conditions at Playa del Castillo in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Playa del Castillo 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 Playa del Castillo for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa del Castillo 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 Playa del Castillo.