Conditions at Yerbabuena in August
August: Summer Lull Continues
August is more of the same, with a slight bump in period from July. Average swell height is 2.6ft (0.8m) and period 7.2s. The wave rose remains locked in a summer pattern: WNW at 60.0%, E at 15.2%, W at 6.0% and NW at 4.9%. S/SW swell is basically absent, so Yerbabuena continues to rely on weak NW/WNW groundswell with very little push. The rare exception comes from an Atlantic low that drifts far enough south to angle some S/SW energy toward the coast, but the statistics suggest this is a one-in-a-month event at best.
Winds remain a limiting factor; ideal conditions occur only 22% of the time. E at 22.6% and ESE at 13.1% provide the familiar summer cross-shore chop, while W at 15.0% and WNW at 9.8% are common but often accompany the smaller swell. Air temperature reaches its annual peak at 23.2°C, water temp is the warmest of the year at 20.6°C, and rain is basically nonexistent at 0.07mm/day. Late August tropical activity can sometimes send a surprise S/SW swell, and those are the sleeper days to watch for.
Average Spot conditions at Yerbabuena in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Yerbabuena 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 Yerbabuena for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yerbabuena 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 Yerbabuena.