Conditions at Entella in September
September: First Whiff of Autumn
September is a teaser. The average swell height remains small at 0.5m (1.5-2ft) and the mean period is only 4.8s, but the first early-season cold fronts begin to track into the Mediterranean. The swell rose still leans on SW at 29.7 percent and WSW at 13.6 percent, yet the southwesterly window is less overwhelmingly dominant than in summer. The wind rose shows NNE returning to prominence at 16.5 percent, signalling that the favourable autumn set-up is loading in the wings even if the ocean has not fully awakened.
Ideal wind improves to 12 percent, and N through ENE combined reach 32.6 percent, offering more surfable mornings than the summer months. Water temperature is 22.4°C and air averages 18.0°C, so wetsuit requirements are still easy. Precipitation picks up to 2.81mm/day, evidence that frontal systems are starting to organize. September will not blow you away, but keep the board in the car, because the first legit SW swell of the season can slip through before autumn officially begins.
Average Spot conditions at Entella in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Entella 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 Entella for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Entella 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 Entella.