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Conditions at Dee Why Point in May
May: The Winter Groundswell Machine
May is where the Southern Ocean and Tasman Sea storm tracks really come alive. The average wave period reaches its annual high of 9.7s, while the average height sits at 5-6ft (1.7m). The dominant swell directions shift strongly into the SSE and S quadrants, but the more easterly ESE and SE components remain in the mix, and those are the directions that Dee Why Point handles best. The wind story improves dramatically as well: westerly and southwesterly offshore flow dominates, pushing the ideal wind percentage up to 45% and creating long stretches of clean, lined-up surf.
Water temperatures drop to 21.0°C while air temperatures average 17.1°C, and rainfall falls to a drier 2.04 mm/day. Layering up becomes part of the routine, but the quality of the waves makes it absolutely worth it.
Average Spot conditions at Dee Why Point in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Dee Why Point 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 Dee Why Point for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Dee Why Point 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 Dee Why Point.