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Conditions at Pororoca in September
September: The Equinox Re-Awakens
September brings the second surge of the year as the equinox approaches. The river is still dry-season lean, with precipitation just 1.52 mm/day, but the astronomical tides are building toward their strongest phase. Wind data is remarkable for its consistency: ENE flows reach 72.3%, with 66.5% of all conditions in the 10-20kph bracket. That is a lot of trade wind, and ideal offshore wind is still 0%. Open-ocean swell is once again nil at 0ft (0m) and 0.0s. Water temp is 29.2°C. The bore starts to regain some height and push around new and full moon periods; it may not match February-March, but it is the best bet in the latter half of the year. Average air temperature is 26.8°C.
Average Spot conditions at Pororoca in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Pororoca 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 Pororoca for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Pororoca 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 Pororoca.