Conditions at Costa da Caparica in August
August: Still Summer, but the Atlantic Begins to Stir
August is a near-repeat of July: average wave height holds at 1.0m (3-4ft) and period ticks up slightly to 9.1 seconds. NW again dominates the swell rose at 66%, with WNW at 24% and W at 4%. The wind regime is still nortada-dominated-NNW 62%-but there is a subtle increase in favorable wind, with ideal surf conditions at 27%. That small shift, plus a slight rise in average period, means more clean summer days than in July. Most waves will still be small, but the first hints of Atlantic hurricane swell or a distant low can occasionally light up the beach with a fun, clean 3-5ft day. When the offshore E/NE wind aligns with those pulses, Costa da Caparica can actually be quite fun, even in the middle of summer. Water is at its warmest, 18.0°C, air averages 20.5°C, and precipitation is minuscule at 0.18 mm/day.
Average Spot conditions at Costa da Caparica in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Costa da Caparica 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 Costa da Caparica for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Costa da Caparica 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 Costa da Caparica.