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Conditions at Caswell Beach in May
May: The Late-Spring Lull Sets In
By May the Azores High is starting to flex and the Atlantic storm track has shifted north, leaving Caswell in a quieter summer pattern. Average swell height drops to 2-3ft (0.8m) with an average period of only 8.3s, so most of the energy is short-period windswell rather than true groundswell. Over 60% of the swell still comes from WSW/W, and the favourable SSE-S-SW sector is only small and often underpowered. Ideal offshore winds are down to 12%, with W/SW winds becoming more frequent and bringing bumpy, onshore conditions. Air temperatures climb to 11.6°C, water warms to 12.1°C, and precipitation is at its lowest of the year at 2.19mm/day. The surf is small and grovelly, but a clean NNE/NNW morning can still turn leftover west energy into playful waist-high waves.
Average Spot conditions at Caswell Beach in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Caswell Beach 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 Caswell Beach for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Caswell Beach 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 Caswell Beach.