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Conditions at Pichilemu in September
September: Spring's Rebirth
September is the season-turning month in Pichilemu. The average swell height eases slightly to 1.6m (5.2ft) but the period remains 12.5s, and the directional mix changes dramatically: the SW component jumps to 38.9%, its highest of the year, while WSW still leads at 46.9%. This means more angling, wrapping groundswell into the north-facing coast, often with added push from the southwest. The wind also turns back in your favor: ideal conditions rise to 71%, with S/SSW/SW winds delivering clean surfaces for a majority of the time. The lingering winter swell trains still produce plenty of 1.5-2m (4.9-6.6ft) faces, and the arrival of any 2-2.5m (6.6-8.2ft) set feels powerful and organized. Air temps start to rise to 11.3°C, water holds at 12.3°C, and rainfall drops to 1.24mm/day. September is the spring board to the best six months of the year.
Average Spot conditions at Pichilemu in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Pichilemu 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 Pichilemu for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Pichilemu 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 Pichilemu.