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Conditions at Port Mary in May
May: Small But Directionally Pure
May marks the real transition into small-wave summer. The average swell is down to 5.6ft (1.7m), a period of 10.2s, and ideal wind drops to 31 percent. Directionally, it is hard to beat Port Mary: SW and WSW dominate, with SSW and S also in the mix, but the heights shift down into the 3-5ft (1-1.5m) rippable range, and there are plenty of 2-3ft (0.5-1m) fun-sized waves. The wind regime becomes a battle between light NW/WNW overnight flow and daytime SSE/S sea breezes, so dawn patrol is your best friend. Air temperature rises to 7.9°C and water to 8.3°C, while precipitation is relatively low at 3.84mm/day. The groveler comes out, but clean corners can still be found.
Average Spot conditions at Port Mary in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Port Mary 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 Port Mary for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Port Mary 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 Port Mary.