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Conditions at Motunau Beach Island in August
August: Winter Hangs On
August remains firmly in the winter sweet spot, with average swell height 4-5ft (1.4m) and period 10.7s. Ideal wind frequency is still excellent at 54 percent. The dominant swell is E at 18.1 percent, closely followed by ESE at 16.2 percent and SE at 15.0 percent; southern energy is slightly less prominent than June, with S at 11.3 percent and SSW at 3.0 percent. This means Motunau is a touch more dependent on easterly windswell and groundswell, but when S/SSW pulses coincide with a N/NW offshore, the result is long-period pumping surf. Sea surface temperature sits at the yearly minimum of 9.3°C and air temps are cool; winter rubber and patience are required.
Average Spot conditions at Motunau Beach Island in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Motunau Beach Island during August. 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 Motunau Beach Island for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Motunau Beach Island for August. 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 Motunau Beach Island.