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Conditions at The Dunes in June
June: Peak Winter Power
June is the heart of winter and the stats show it: average swell height jumps to 2.8m (9.2ft) with a solid 12.4s period. SW swells account for 19.2 percent and, crucially, WSW adds 10.9 percent and W adds 2.9 percent, giving The Dunes a generous slice of the most favorable directional window. The WNW and NW components also chime in at 1.0 percent and 0.3 percent. These are heavy, long-period groundswells generated by intense South Atlantic cyclones, and when they arrive you are looking at pumping, firing sand-bottom waves.
The ideal wind percentage peaks at 25 percent, the highest of the entire year. SE winds provide 12.6 percent of the flow and SSE another 11.4 percent, but the wind rose is also marked by a strong NNW component at 22.4 percent. That means the biggest swells often come with onshore NW/NNW wind. Patience is the game in June: wait for the front to pass, the wind to swing SE into dawn, and then enjoy some of the heaviest, most powerful surfing days of the year. Water temp drops to 15.8C and rainfall reaches its annual peak at 2.77 mm/day.
Average Spot conditions at The Dunes in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at The Dunes during June. 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 The Dunes for your next trip in June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at The Dunes for June. 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 The Dunes.