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Conditions at Assinie in September
September: Still Sloppy, But the Engine Is Loaded
September holds onto the late-summer swell pattern with an average height of around 4ft (1.2m) and a period of 11.4s. The S/SSW split is similar to August, with 65.3% S and 34.5% SSW, and again the bulk of the energy sits in the 3-5ft (1-1.5m) range. Ideal wind conditions remain poor at 1%. Southwest wind holds at 47.9%, WSW at 22.0% and SSW at 21.9%, though wind speeds have eased slightly from July-August, with most of the 10-20kph action concentrated in the SW-WSW quadrants.
Water temperature begins to warm again at 24.7°C, air sits at a mild 24.8°C and rainfall picks up to 2.66mm/day. There is still a lot of quality long-period S/SSW swell around, but you are fighting for those rare windows as the monsoon relaxes.
Average Spot conditions at Assinie in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Assinie 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 Assinie for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Assinie 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 Assinie.