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Conditions at Cerro Azul in September
September: Final Winter Push
September delivers one last blast of winter energy. Average wave heights remain at 7ft (2.1m), the period sits at 12.8s, and the Southern Hemisphere storm track is still spraying long-period swell toward the Peruvian coast. S swell reaches its peak influence at 29.5%, while SSW accounts for 55.9%. The size distribution is broad: 43% in the 5-7ft (1.5-2m) range and 37% in the 7-8ft (2-2.5m) range, keeping Cerro Azul well overhead on the majority of days.
Winds stay perfectly aligned for the spot. S winds blow 50.4% of the time and SSW winds 43.7%, with ideal conditions 93% of the month. Water temperatures bottom out at 15.4°C - the coldest of the year - and air temperatures average 17.5°C. September is the tail end of the heavy winter window, but it still offers some of the most powerful, grinding surf of the entire year.
Average Spot conditions at Cerro Azul in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Cerro Azul 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 Cerro Azul for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cerro Azul 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 Cerro Azul.