Conditions at Langeoog in September
September: Autumn Swell Stirs Again
September is where the North Sea begins to wake up after the summer slumber. The average swell height jumps to 4-5ft (1.3m), average period lengthens to 6.2s, and the number of 5-8ft (1.5-2.5m) waves from WNW, NW and NNW clearly increases. The optimal swell directions are well represented: NNW leads at 15.2%, followed by NW at 13.0% and WNW at 12.2%, while W adds 11.2%. This is the month when the first strong extratropical lows of the season can tap into cold polar air over the Atlantic and send a solid, punchy windswell and groundswell mix toward the island's northwest coastline. Wind is still predominantly from the SW-W quadrant, but the ideal offshore wind percentage climbs to 14%, one of the highest of the year. On a September day with an ESE or SSE breeze and autumn sun, Langeoog can deliver surprisingly clean, fun-sized surf in the 3-5ft (1-1.5m) range. Water temperature is still pleasant at 17.2°C, air averages 15.9°C, and precipitation increases to 2.66mm/day as fronts return.
Average Spot conditions at Langeoog in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Langeoog 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 Langeoog for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Langeoog 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 Langeoog.