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Conditions at Revolcadero in September
September: The Heavyweight Tropical Peak
September is the climatological peak of eastern Pacific tropical-cyclone activity, and the numbers at Revolcadero reflect it. Average swell height ties for the annual high at around 4.5ft (1.4m), with the average period at 13.2s. The swell direction is almost perfectly lined up: SSW 72.6%, SW 13.2% and S 12.9%. What separates September is power: about 31% of all waves are in the 5-8ft (1.5-2.5m) category, including a meaningful share of 6-8ft (2-2.5m) bombs. When these pulses arrive, Revolcadero is a heavy, pumping, take-no-prisoners beach break.
The catch is weather. Rainfall peaks at 9.65mm/day, average air temperature is 25.2°C, and water temperature remains a warm 30.3°C. Ideal winds hold at 48%, but tropical moisture, rain squalls and shifting breezes can make the surface messy. The combination of long-period south swell and occasional clean offshore windows makes September a high-reward, high-effort month for the dedicated surfer.
Average Spot conditions at Revolcadero in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Revolcadero 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 Revolcadero for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Revolcadero 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 Revolcadero.