Conditions at Aterro in July
July: The Smallest Surf of the Year
July is the flattest of the flat. Average height bottoms out at 4-5ft (1.2-1.5m) and period at 8.5 seconds, the lowest of the year. Swell direction is overwhelmingly NW (44.9%) and NNW (30.6%), with some WNW (18.5%), but almost all of it sits in the 0.5-2m range and rarely exceeds 2.5m.
Winds turn hostile for quality: NNW winds blow 43.2% of the time, with NW adding 16.1%. Ideal offshore windows fall to just 11%, the lowest annual mark. A rare dawn patrol with a light SE/E flow can catch clean, fun waves, but do not expect long-period power. Air temps peak around 20.1°C, water is a comfortable 16.8°C, and rain is almost non-existent at 0.41 mm/day.
Average Spot conditions at Aterro in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Aterro during July. 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 July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Aterro for July. 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.