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Conditions at Manuel Antonio in August
August: Big Swell on the Shoulder
August holds the line with another 4.6ft (1.4m) average swell height and a very respectable 13.2s period. SSW remains dominant at 83.5%, including 21.8% in the overhead 5-6.5ft (1.5-2m) range, while SW provides 16.0% and helps push the directional spread. The wind regime is the same stubborn story as July-ideal wind only 19% and onshore S/SW flow common in the afternoon. But the Southern Hemisphere storm track is still active, and this is a month where the average wave height consistently sits at the upper end of the fun-to-pumping scale. With 7.86mm/day of rain and water at 29.0°C, it is muggy, but the swell is there.
Average Spot conditions at Manuel Antonio in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Manuel Antonio 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 Manuel Antonio for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Manuel Antonio 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 Manuel Antonio.