Conditions at Les Sables d'Or in September
September: First Signs of Life
September is the bridge back toward autumn. Average swell height ticks up to 3-4ft (1.1m) and the average period lengthens to 10.6s as the first autumn lows begin to stir in the North Atlantic. The swell direction is still dominated by NW (53.8 percent) and WNW (33.3 percent), with NNW (8.3 percent) chipping in, but the size distribution shifts upward compared to summer. There are still plenty of small days, yet the 3-5ft (1-1.5m) range is now more common, and a few overhead waves start to appear.
Offshore wind availability improves to 29 percent as low-pressure systems begin to track closer to Western Europe. The air is still warm, averaging 18.9°C, and the water holds onto an inviting 20.8°C. Rain increases slightly to 2.7mm/day. September is a great sneaky month: the crowds start to thin, the water is still warm, and the cleanest E/SE days can serve up surprisingly fun surf as the ocean wakes from its summer nap.
Average Spot conditions at Les Sables d'Or in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Les Sables d'Or 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 Les Sables d'Or for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Les Sables d'Or 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 Les Sables d'Or.