Conditions at Doughmore in September
September: Autumn's First Roar
September is a transition month with a clear upward trend. Average swell height jumps to 1.5m (5ft) and period lengthens to 10.2s, hinting at the upcoming autumn season. The W (37%), WNW (22%) and WSW (17%) combination still rules the swell rose, and a healthy percentage of 5-6ft (1.5-1.8m) waves can be found across the W/WNW quadrants.
Wind patterns begin to shift: ideal NE-ESE offshore flow is at 23%, and the westerly onshore regime, while still present at 39%, is less locked-in than in summer. Water temperature remains pleasant at 15.6°C, air temps average 13.9°C, and rainfall is moderate. September offers some of the best summer-to-autumn surf windows: warm water, stronger groundswell, and the returning possibility of clean, offshore mornings.
Average Spot conditions at Doughmore in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Doughmore 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 Doughmore for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Doughmore 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 Doughmore.