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Conditions at North Wall Ballina in September
September: Spring Bloom with Offshore NNW Flow
September is a transition month, but it still rides high on winter's momentum. Average swell height is 5ft (1.5m), period drops to 8.8s, and the swell mix becomes broader: SSE 21%, SE 14%, E 12%, ESE 11%, plus renewed NNE and NE pulses from the redeveloping trade wind belt. Ideal wind remains solid at 54%, and the dominant NNW flow at 19% is a gift to North Wall's exposed ESE sandbars. The W/WNW/NW/NNW quadrant totals nearly 36%, so the surface is far cleaner than the summer months. Air temps start to rise to 19.6°C, water sits at 20.5°C, and rainfall is the lowest of the year at 1.34 mm/day. The surf is often still excellent, though the periods are shortening and the first signs of spring instability appear.
Average Spot conditions at North Wall Ballina in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at North Wall Ballina 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 North Wall Ballina for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at North Wall Ballina 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 North Wall Ballina.