Conditions at Sao Lourenco in October
October: The Atlantic Wakes Up
October is when the North Atlantic roars back to life. Average swell height jumps to 2.0m (6.6ft) and the average period stretches to 11.4s, reflecting a marked increase in strong extratropical storm activity. The swell mix becomes more varied, with NW at 30.6 percent, NNW at 19.5 percent and WNW at 18.6 percent, plus a growing contribution from true W and WSW swells - all inside the ideal window for Sao Lourenco.
Wind quality improves dramatically. Ideal offshore wind reaches 20 percent, while the relentless summer NNW weakens to 19.0 percent. This creates far more days of long-period, clean, heavy surf. Water temperature remains warm at 18.1°C and air averages 17.6°C, but rainfall increases to 2.62 mm/day as autumn storms arrive.
Average Spot conditions at Sao Lourenco in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Sao Lourenco during October. 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 Sao Lourenco for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sao Lourenco for October. 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 Sao Lourenco.