Conditions at Prainha in October
October: Autumn Fires Up
October is the gateway to the prime season. The North Atlantic begins to roar, lifting the average swell to 7ft (2.1m) and the period to 11.4s. Directionally, NW (27.1 percent), NNW (18.1 percent) and WNW (17.4 percent) dominate, with true west (6.4 percent) and WSW (1.9 percent) adding more of the optimal west-corridor swell. The arrival of deep extratropical cyclones means Prainha starts seeing consistent solid surf again, with plenty of 6-8ft (1.8-2.4m) pulses.
Ideal wind percentage jumps to 33, and the sea surface remains warm at 18.3°C. Air temperature is 17.7°C, rain increases to 2.87mm/day. Autumn brings variety: glassy mornings, building NW groundswell, and the first real 8ft-plus (over 2.5m) swells of the year.
Average Spot conditions at Prainha in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Prainha 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 Prainha for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Prainha 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 Prainha.