Conditions at Porto Covo in September
September: Autumn's First Breath
September is the first month that hints at autumn. Average swell height is 4-5ft (1.4m) and the period rebounds to 10.6s, injecting a bit more push into the summery NW (55%) and WNW (21%) swell. The height distribution still tilts small - mostly 0.5-1.5m - but 1.5-2m waves become more common on the NW peaks. Wind is still predominantly NNW (28%) and NW (18%), but the percentage of ideal offshore flow rises to 20%, giving more clean early-morning sessions. The water is still very warm at 18.1°C, with air temperatures at 21.3°C, making late September a genuinely pleasant time to score some small, clean waves at Porto Covo. It is not winter yet, but the tide is turning.
Average Spot conditions at Porto Covo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Porto Covo 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 Porto Covo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Porto Covo 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 Porto Covo.