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Conditions at The Dunes in March
March: First Autumn Signals
March is where the seasonal transition begins to show in the numbers. The average swell remains 2.3m (7.5ft), but the average period ticks up to 11.7s and the ideal wind percentage improves to 14 percent. Swell direction is still biased strongly toward SSW and SW - SSW at 21.0 percent and SW at 25.7 percent - while the preferred WSW/W/WNW/NW window remains only about 5.5 percent of the total. Still, those early autumn cold fronts are starting to push farther north, and the pulse of longer-period energy becomes more noticeable.
Wind-wise, SSE still leads at 32.9 percent, with SE at 18.7 percent and S at 14.3 percent. The good news is that the frequency of strong 40-50kph SE winds eases slightly compared to mid-summer, giving more manageable cross-offshore conditions. Water temp is 17.7C and air temps are pleasant around 19.4C. March is the first month where an early season W/SW swell can line up with a decent offshore morning and give The Dunes a taste of the coming winter.
Average Spot conditions at The Dunes in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at The Dunes during March. 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 March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at The Dunes for March. 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.