Conditions at Cap Sim in August
August: Same Summer Pattern with a Glimpse of Autumn
August is a near-carbon copy of July: 5.2ft (1.6m) average swell, 8.1-second period, and a wave rose locked on the NNW at 87 percent. The wind regime is still relentless - NNE at 53 percent and NE at 21 percent - but the ideal wind percentage improves slightly to 29 percent as the trade wind relaxes a little. The west-southwest orientation of Cap Sim means the waves are generally short-period, NNW windswell that are small and weak, with only a brief NW component near 2 percent to break the monotony. Any genuine SSW/SW/W swell remains extremely rare.
August is the warmest month for air, averaging 22.2°C, with water temperature at 19.1°C and barely any rain. It is a month for loggers, longboard fun, and keeping expectations low until the autumn transition begins.
Average Spot conditions at Cap Sim in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Cap Sim 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 Cap Sim for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cap Sim 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 Cap Sim.