Conditions at Inch Reef in September
September: The Atlantic Wakes Up
September is a hand-off month. The average wave height rises back to 3.9ft (1.2m) and the average period recovers to 10.3 seconds, a sure sign that low pressure is starting to organise across the North Atlantic. Energy from WNW (32%), W (26%), NW (16%) and WSW (12%) dominates, and the distribution shifts noticeably into the 3.3-6.6ft (1-2m) classes. The first proper long-period groundswell of autumn can arrive toward the end of the month, and those are the days when the reef starts to feel alive again.
Onshore winds are still prominent-SW and WSW each sit near 10% and SSW adds 9%-but ideal wind windows improve slightly to 27 percent. NNW at 9% and NNE at 4% provide clean windows before the sea breeze. Water temperature is still a comfortable 15.8°C while air cools to 13.8°C; precipitation ticks up to around 3.8mm/day. The surf is not as big as midwinter, but the quality and potential are definitely back.
Average Spot conditions at Inch Reef in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Inch Reef 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 Inch Reef for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Inch Reef 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 Inch Reef.