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Conditions at Pirates Cove in September
September: The Sweet Spot for Clean, Long-Period Surf
September is arguably the best month at Pirates Cove. The average swell is still moderate at 0.8m (2.5-3ft), but the period jumps to 10.1s, the first true long-period signal of the season. The swell direction spectrum widens: ENE remains the leader at 39.9%, E at 16.6%, and NE at 26.2%, with NNE adding 4.7% and ESE 4.8%. There is now a real mix of background NE Pacific energy and local monsoon swell, and the NE contribution brings more consistent 1-1.5m (3-5ft) sets.
The wind is the real hero: ideal offshore conditions run 63% of the time, with SW, WSW, W, SSW and WNW all well represented. Air is 28.0°C, water 29.3°C, and rainfall averages 7.15mm/day. Clean glassy mornings and a more powerful pulse make September the month to book.
Average Spot conditions at Pirates Cove in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Pirates Cove during September. 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 Pirates Cove for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Pirates Cove for September. 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 Pirates Cove.