Conditions at Gilleleje Havn in September
September: First Autumn Pulse
September marks the beginning of the slow climb back toward surfable winter. Average swell height rises slightly to about 1.5-2ft (0.5m) and average period increases to 3.8s, while the ideal-wind percentage sits at 1 per cent. Wave directions are still dominated by W, WNW, WSW and SW, but the N-NNW sector begins to show a little more presence. Wind patterns become more mixed, with W, WSW, WNW and SW all well represented, while E/SE winds still appear often enough to keep things messy. Air temperature is a pleasant 14.0°C, water temperature still a warm 16.0°C, and precipitation averages 2.2mm/day. The first strong North Atlantic lows can deliver a short, punchy N/NW windswell, and with the water still warm, September can offer the best comfort-to-surf ratio of the year, even if the waves remain small and period-poor.
Average Spot conditions at Gilleleje Havn in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Gilleleje Havn 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 Gilleleje Havn for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gilleleje Havn 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 Gilleleje Havn.