Conditions at Aterro in August
August: A Little More Energy, Still Summer Small
August nudges the average swell back to 4-5ft (1.2-1.5m) with a period of 8.9 seconds. NW remains dominant at 45.9%, while WNW (18.3%) and NNW (28.5%) round out a directionally consistent north-to-west pattern. The main issue is the lack of long-period organization; most of the energy is short-period windswell.
Ideal wind percentage climbs slightly to 14%, but NNW (42.2%) and NW (16.1%) winds still dominate the afternoons. The combination of strong north wind and modest swell means Aterro will look its best on small, glassy mornings before the sea breeze kicks in. Water holds at 16.9°C, air at 20.4°C, and rainfall remains minimal at 0.75 mm/day.
Average Spot conditions at Aterro in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Aterro 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 Aterro for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Aterro 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 Aterro.