Conditions at Matadouro in August
August: Summer Continues, Hints of Change
August is still low season, but the corner is about to turn. Average swell height is similar at around 4.5ft (1.4m) with an average period of 8.9s. NNW (50.7%) and NW (35.1%) continue to dominate, though WNW (10.2%) starts to add slightly more westerly variety. The surf is mostly summer north windswell: consistent but disorganized, and lacking the period to create proper hollow waves at Matadouro.
Ideal wind is still poor at 6%, with NNW winds at 54.7% and N winds at 15.0%. The strong northerly is relentless through the day. That said, late August often brings the first long-period, pre-autumn swells from distant Atlantic lows, and when an ESE/SE offshore wind lines up with one of those pulses, the quality can surprise you.
Water temperature peaks at 17.8°C, air temperature averages 20.7°C and there is almost no rain (0.25mm/day). A 3/2mm wetsuit and a flexible schedule are essential.
Average Spot conditions at Matadouro in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Matadouro during August. 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 Matadouro for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Matadouro for August. 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 Matadouro.