Conditions at Morro dos Conventos in August
August: Size on Tap, Wind on the Bump
August brings the second-biggest average swell of the year at around 5-6ft (1.6m), but the quality meter starts to flash caution. The swell rose is very evenly spread from ENE through S - every direction from ENE to S sits in the 14-16% range - meaning a mix of long-period south swell and shorter-period easterly windswell. Wave heights in the 1.5-2m and 2-2.5m classes are common, especially from the S sector, so there is real power available.
The problem is the wind. NE flow balloons to 29.9%, the largest of any month, while ideal offshore time falls to 21%. This creates plenty of bumpy, cross-shore conditions between cold-front passages. SSW/SW onshore wind still occupies about 23.7% of the rose. When the charts line up - a strong S/SSW groundswell and a W/NW offshore - August can be firing, but the surface texture often limits the quality. Water temp is at the annual low of 16.6°C, matching the air temp of 16.6°C.
Average Spot conditions at Morro dos Conventos in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Morro dos Conventos 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 Morro dos Conventos for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Morro dos Conventos 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 Morro dos Conventos.