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Conditions at The Pass in September
September: Spring's Highest Ceiling, Lowest Floor
September is a month of maximum opportunity and maximum frustration. The N/NE swell share leaps to 20.3% - NNE (10.3%) and NE (9.2%) - as tropical cyclones and monsoon troughs begin stirring in the Coral Sea. But the synoptic wind is deteriorating: NNW winds surge to 20.9%, the offshore S/SSW flow drops to 24.8%, and ideal wind sits at just 17%.
The average period slips to 8.8s, making the 4.9ft (1.5m) of swell less substantial than it looks on paper. Water temp is creeping up from its winter low at 20.4°C (69°F), and rainfall is minimal at 1.28mm/day. The recipe for a 5-star day is in place - NE swell pushing in while a slow-moving inland trough drags the wind to W/SW - but those days are scattered. September demands flexibility.
Average Spot conditions at The Pass in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at The Pass 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 The Pass for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at The Pass 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 The Pass.