Conditions at Karmay in May
May: Windswell Season Arrives
May is when the North Atlantic muscles step back and Karmay starts to rely on locally generated windswell. Average height drops to 3.9ft (1.2m), period to 7.7s, and although there is still a decent amount of S/SW swell in the rose, most waves are shorter-period and better suited to a fish or longboard.
The wind regime is changing: the dominant NNW flow reaches 25.9%, with NW at 11.9%, while SSE and S bring afternoon softness. Ideal offshore flow holds at 25%. Water temperature climbs to 8.9°C, air temps average 9.2°C, and it is a transition month where quality depends entirely on finding the handful of clean dawn windows.
Average Spot conditions at Karmay in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Karmay 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 Karmay for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Karmay 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 Karmay.