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Conditions at Sunrise in September
September: Big Spring Swell Meets the Returning Trades
September is a classic shoulder month-big average swell height at 2.0m (6.6ft), but a noticeable loss of wind quality. The period shortens to 9.4s, so while it's not as powerful as June, it still has punch. The ENE direction (14.9%) is very active, with 6.5% in the 2-2.5m class, and S (18.8%) plus SSE (15.9%) deliver the bigger packets. The E/ESE/SE directions remain strong. The problem is wind: NE rebounds to 15.4%, ENE to 8.1%, and the 'ideal wind' score slides to 26%. Offshore west flow is limited to around 7%. Water temperature is 21.2°C, air 19.9°C, and rainfall increases slightly to 1.46mm/day. The waves are often chest-to-head plus, but a lot of it is lumpy and onshore. Look for the morning clean windows, and go hard when a front pushes the breeze offshore.
Average Spot conditions at Sunrise in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sunrise 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 Sunrise for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sunrise 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 Sunrise.