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Conditions at Arpoador in September
September: Big Swell, Fickle Wind
September still averages an impressive 1.5m (5ft) at 10.5s, but the transition to spring makes surface conditions more of a gamble. S and SSE split the swell energy (24% each), while ESE (18%) and SE (18%) fill in the margins. The S/SSW window includes enough 1.5-2.5m (5-8ft) waves to keep things exciting, but the ideal wind percentage drops to 47%-the trade winds and S/SW onshore flow take turns. Water temp falls to 20.7°C, the coolest of the year, and spring rains begin to increase. Watch the forecasts closely: days with N/NNE wind and S swell are the ones that deliver Arpoador at its best.
Average Spot conditions at Arpoador in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Arpoador 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 Arpoador for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Arpoador 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 Arpoador.