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Conditions at Sandy Beach in September
September: The Autumn Ramps Up
September is the first sign of life after summer. The average swell height climbs to around 6ft (1.9m) and the period sits at 9.9 seconds, still a bit short but slowly improving. The swell direction is excellent, with WSW (29.0%) and SW (25.3%) dominating, plus a solid SSW (10.8%) contribution. Wind quality remains mediocre - ideal only 34 percent of the time - with ESE/SE/SSE winds becoming more frequent as early fall systems brush the region. Precipitation jumps to 9.13 mm/day, and air temps cool to 11.4°C while water still holds at 13.0°C. The first real groundswells of the season start to appear in the background, giving September a mix of leftover summer mush and early-season juice.
Average Spot conditions at Sandy Beach in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sandy Beach 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 Sandy Beach for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sandy Beach 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 Sandy Beach.