Conditions at Playa de La Concha in September
September: The First Whiff of Autumn
September is the turning point. The average swell height climbs to 4-5ft (1.3m) and the period lengthens to 10.4s, signaling that the Atlantic low-pressure systems are beginning to reawaken. Directionally, the NW and WNW windows still dominate at 53.5% and 21%, with NNW adding 14.5%, so La Concha's exposure is well fed. More importantly, the offshore wind frequency rises to 34%, with the S/SSW flow increasingly showing up during early-morning hours as autumn fronts approach.
Water temperature remains warm at 20.9°C and air temp averages 19.0°C, making it arguably the most comfortable month for surf sessions in a wetsuit. The surf is still on the smaller side, but the character shifts from summer windswell to genuine groundswell, especially late in the month. The first strong W/NW swell of autumn can fire some excellent 4-6ft (1.2-1.8m) waves if it coincides with a S/SW offshore wind before the front arrives. Precipitation begins to increase at 2.59mm/day, a sign low pressure is returning.
Average Spot conditions at Playa de La Concha in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Playa de La Concha 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 de La Concha for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa de La Concha 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 de La Concha.