Conditions at Les Culs Nuls in September
September: Autumn Begins to Stir
September is the bridge between summer lull and autumn quality. Average swell height rises to 3-4ft (1.1m), the period lengthens to 10.6s, and ideal winds improve to 29%. The swell mix is still dominated by NW (54%) and WNW (33%), but the long-period component becomes more noticeable, giving the beach more shape and push. Wave heights are mostly in the 0.5-1.5m (1.6-4.9ft) range, with an increasing number of chest-to-head-high sets. The wind rose becomes more mixed, with NNW still leading but E and ESE offshore flows also showing up regularly. Water stays warm at 20.8°C and air averages 18.9°C, so a springsuit is still possible on sunny days. September is the first month of autumn where a morning offshore wind and a modest NW swell can produce genuinely fun, rippable surf.
Average Spot conditions at Les Culs Nuls in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Les Culs Nuls 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 Culs Nuls for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Les Culs Nuls 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 Culs Nuls.