Conditions at Aterro in October
October: Autumn Roars Along the Portuguese Coast
The North Atlantic roars back to life in October, with average swell jumping to 6-7ft (1.8-2.1m) and period to 11.2 seconds. The direction mix is excellent: NW (30.0%), WNW (22.8%), W (9.4%) and WSW (3.0%) give Aterro plenty of exposure to powerful, long-period groundswell.
Wind statistics follow suit: ideal offshore windows expand to 39%. E/SE winds (6.1%/4.3%), combined with S/SSW (9.1%/8.1%) flow, bring cleaner conditions, while NNW (17.3%) becomes less dominant. Air temps cool to 16.6°C, water sits at 16.8°C, and rain ramps up to 4.15 mm/day - the storm season is officially here.
Average Spot conditions at Aterro in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Aterro 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 Aterro for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Aterro 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 Aterro.