Conditions at La Boya in September
September: The First Real Release
September is where La Boya starts waking back up. The average height is the smallest of the year at 3ft (0.9m), and the period drops to 5.9s, but the percentages begin to change in the surfer's favor: ideal wind jumps to 14%. The wind rose shows a meaningful rise in S and SW components (S 3.8%, SSW 2.8%, SW 0.9%), which means offshore flows are no longer a fantasy. The swell is still mostly ESE (53.1%) with E at 20.1% and SE at 17.3%, so the direction is good-it just lacks full power. Still, a passing tropical storm can instantly transform a tiny ESE swell into a clean, long-period 3-5ft (1-1.5m) pulse. Water temp peaks at 29.2°C (85°F) and the average breeze is barely enough to cool the 28.2°C air.
Average Spot conditions at La Boya in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at La Boya during September. 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 La Boya for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Boya for September. 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 La Boya.