Conditions at Aterro in March
March: Late-Winter Swell Meets Spring Light
March sees average heights easing to 7-8ft (2.1-2.4m) with a period of 12.2 seconds - still proper groundswell. The direction mix is excellent: WNW (20.9%), NW (23.2%), W (7.9%) and WSW (2.6%) combine for over 54% of all incoming energy at Aterro. This is a classic month for long, clean west-northwest groundswells when the wind plays ball.
Ideal wind windows drop to 36% as the Azores High begins to strengthen and NNW flow (18.2%) builds during settled spells. Still, E (8.5%) and S/SSW (6.2%/6.3%) winds can provide glassy conditions, especially in the early morning. Air temperatures warm to 12.4°C, water stays cool at 13.7°C, and rain eases slightly to 2.97 mm/day.
Average Spot conditions at Aterro in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Aterro during March. 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 March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Aterro for March. 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.