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Conditions at Playa Junquillal in September
September: Big but Messier
September offers some of the largest swells of the year at Junquillal, but the consistency of clean conditions weakens. Swell direction is almost perfect, with SSW 66.7%, SW 28.8% and WSW 2.3%, meaning close to 98% of the wave energy is coming from the optimal west-southwest window. The average height is 1.5m (5ft), with a solid amount of 1.5-2m (5-6.5ft) sets, and the period remains strong at 13.1s. The biggest risk is not swell, but wind, as ideal conditions drop to 49%, the lowest of the year.
September is the wettest month, with 8.75mm/day of rain, air temperatures around 26.7°C, and water temperature at 28.9°C. Strong tropical weather, easterly waves, and a more active Intertropical Convergence Zone create periods of onshore southwest flow and lumpy seas. Still, when the synoptic pattern temporarily dries out and the wind shifts to ENE/E, Junquillal can absolutely pump with long, clean, powerful southwest swell. Patience is essential, but the reward is some of the most serious surf of the year.
Average Spot conditions at Playa Junquillal in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Playa Junquillal 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 Playa Junquillal for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa Junquillal 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 Playa Junquillal.