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Conditions at Mangamanu in September
September: Spring Swing, Still Good
September begins the slow transition toward summer, but the surf still has plenty of life. Wave heights average 5.5ft (1.7m) with periods of 10.3s. The S swell is still dominant at 19.9%, with SSE (12.2%) and SE (9.7%) continuing to feed the beach. Ideal wind percentages remain high at 66%, with NW (15.7%) and NNW (13.9%) still frequent. However, the occasional autumn high-pressure ridge can bring lighter NE winds and smaller, mushier days. Water temps are beginning to bottom out at 10.2°C (50°F), but after the long winter, most surfers are used to it. September offers a final window of high-quality waves before the summer lull sets in.
Average Spot conditions at Mangamanu in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Mangamanu 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 Mangamanu for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mangamanu 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 Mangamanu.