Conditions at Borkum in September
September: The Season Starts to Breathe
September is the shoulder month where Borkum starts waking up. Average swell height rises to around 3ft (0.9m), the period stretches to 6.0s, and ideal wind jumps to 11%. The waverose is still NNW-dominated at 20.4%, with NW at 13.7% and WNW at 12.3% adding solid mid-range swell; the 1-1.5m classes from NNW and NW are healthy, and the first hints of 2m+ swell appear in the data. The wind pattern suddenly looks more surfable: SSW, SW, WSW and W all sit near 9%, meaning more offshore/cross-offshore days than in the summer. Water temperature remains pleasant at 17.2°C and average air temperature is 15.3°C, making September one of the best combinations of warm water and decent surf. It is not winter power yet, but the North Atlantic is stirring and the quality-to-comfort ratio is arguably the best of the year.
Average Spot conditions at Borkum in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Borkum 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 Borkum for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Borkum 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 Borkum.