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Conditions at Kommetjie in September
September: Swell Holds, Spring Winds Arrive
September is a transition month with a winter heart. Average swell is still a solid 8.9ft (2.7m) at 12.1 seconds, and the directional mix includes SW (18%), SSW (11%), WSW (10%) and S (6%). The storm track is still active, but the high pressure system is beginning to build, bringing more frequent SE winds (17%) and SSE winds (13%). This is often a blessing: the SE flow blows offshore, cleaning up the leftover winter groundswell. Yet ideal conditions fall to 13% because light ESE/SE winds are less common and the wind often switches between NW and SE. Air temperatures rise slightly to 14.9°C, water warms to 15.5°C, and precipitation drops to 1.30 mm/day. Expect excellent days when the swell lines up with a gentle SE breeze, especially early in the month.
Average Spot conditions at Kommetjie in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Kommetjie 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 Kommetjie for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kommetjie 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 Kommetjie.