Conditions at Boilers in May
May: Windswell Season Locks In
May sees the summer pattern settle in. The average swell eases to 6ft (1.8m), and average period shortens to 9.4s. The directional data is almost comically one-sided: NNW swell accounts for 62.9%, NW for 19.3%, and WNW for 3.5%. Most waves are in the 1-2m range, but they are wind-driven, average and punchy rather than powerful and lined up. True S/SW/WSW swell is essentially absent.
Offshore wind drops to just 21%, while NNW wind dominates with 54.7% and N contributes 17.2%. At Boilers, that means many sessions with cross-shore trade winds and a folded surface. The water warms slowly to 17.4°C and air rises to 19.4°C, but with just 0.28mm rain per day, it is the beginning of the dry, sunny, lower-quality summer surf season.
Average Spot conditions at Boilers in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Boilers 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 Boilers for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Boilers 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 Boilers.