Conditions at La Graviere in August
August: Late Summer Glimmers and Dawn Windows
August sits at the bottom end of the surf calendar but shows a slight statistical uptick compared to July. The average swell height remains 3ft (0.9m), though the period nudges up to 9.4 seconds. Directionally, NW is even more dominant at 66.8%, with WNW adding 25.7%. The waves are still dominated by 0.5-1m swells (just over 54%), but the occasional distant tropical storm or early-season low can send a longer-period pulse into the Bay of Biscay, producing sneaky waist-to-shoulder-high days.
Ideal wind frequency improves slightly to 22%, and offshore ENE, E, ESE and SE flow totals around 14%. Still, NNW (21.4%), NW (16.8%) and WNW (14.4%) winds create persistent summer onshore texture. The reliable play is the dawn patrol: light winds, lower humidity and small NW swell. Precipitation averages 1.83 mm/day. Water temperatures peak at 22.6°C, with air at 21.6°C, so boardshorts are the norm and the main summer crowds are already on the sandbars.
Average Spot conditions at La Graviere in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at La Graviere 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 La Graviere for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Graviere 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 La Graviere.