Conditions at Getxo in September
September: Autumn Stirs
September is when you start checking the forecast with more intent. Average swell height lifts to 4ft (1.2m) and period extends to 10.3s, putting the first real long-period pulses back into the water. NW remains the dominant direction at 51.8%, with WNW at 13.0% and NNW at 19.6%, but there is a notable increase in the 1.5-2m (5-6.5ft) bands. The Atlantic begins to wake up as the first strong autumn lows develop, and October is just around the corner. Ideal wind frequency jumps to 44% - tied with the winter months - and water still holds at 20.4°C with air at 19.5°C. Precipitation begins to increase to 2.04mm/day. September offers a taste of winter power without the winter chill.
Average Spot conditions at Getxo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Getxo 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 Getxo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Getxo 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 Getxo.