Conditions at Yport in September
September: The First Autumn Pulses
September is the transition back to life. Average swell height rises to 0.9m (3ft), though the period is still short at 6.7s. The wave rose is still W-dominated (W 34.9%, WSW 14.4%, WNW 9.4%), but the north/northwest window becomes slightly more significant as the Atlantic lows begin to develop again. The wind pattern is in-between: W 11.0%, WSW 10.5%, SW 8.4%, NE 8.3%, and the ideal offshore wind percentage is 12%.
Water temperature is still warm at 18.3°C (64.9°F), air temperature averages 16.1°C, and precipitation increases to 2.14 mm/day. Surf quality is not yet reliable, but the trend is upward. Look for the first cold fronts moving across the UK and the Channel; when a N/NW swell coincides with a light S/SW offshore wind, Yport can offer surprisingly fun, clean waves. It's a good month to shake off the summer rust.
Average Spot conditions at Yport in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Yport 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 Yport for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yport 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 Yport.