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Conditions at Cape Town in September
September: Spring Shows Its Teeth
September is the bridge from winter swell to spring consistency. Average swell is still a solid 8-9ft (2.4-2.7m), period is 12.1s, and the swell rose remains full of SW (17.8%), SSW (11.0%), S (6.5%) and WSW (9.7%). The wind regime becomes more favorable: SSE 17.7%, SE 15.5% and S 9.2% lead the way, while NNW drops to 14.2% and NW to 9.0%. Ideal wind holds at 36%, with more sunny, dry days as the South Atlantic high begins to build. Air temps ease up to 14.9°C, water temperature is 14.8°C and rainfall drops to 1.30mm/day. September still sees wintry swells, but the skies clear more often, making it a brilliant month to score when the timing lines up.
Average Spot conditions at Cape Town in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Cape Town 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 Cape Town for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cape Town 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 Cape Town.