Conditions at Isla de Santa Marina in September
September: The Autumn Engine Fires Up
September is where the season starts to build again. Average swell height rises to 1.3m (4ft) and period climbs back to 10.4 seconds. NW still dominates at 53 percent, with NNW at 22 percent, but the distribution across heights starts shifting toward the fun solid range: a healthy chunk of 3-5ft (0.9-1.5m) surf now appears on the daily average. The North Atlantic is beginning to generate more meaningful groundswell, and the WNW-facing orientation of the beach remains in prime position.
The wind stats are encouraging. Ideal surf wind reaches 48 percent - tied for the best of the year - with E and ENE winds providing clean morning windows while W and WNW winds remain mostly tied to unsettled weather. Water temperature is still a warm 20.5°C, air averages 19.1°C, and the rain risk is low. September offers a fantastic mix of warm water and building swell; an underrated month for quality.
Average Spot conditions at Isla de Santa Marina in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Isla de Santa Marina 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 Isla de Santa Marina for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Isla de Santa Marina 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 Isla de Santa Marina.