Conditions at Sao Pedro de Moel in September
September: The Spark Returns
September is where the ocean starts to wake up. The average swell height climbs to 1.5m (5ft) and periods lengthen to 10.5s. NW swell is still the engine at 43.6%, with WNW (22.7%) and NNW (20.6%) chipping in. The height distribution shows a healthy spread, with more waves in the 1.5-2m (5-6.6ft) category and the first hints of late-season groundswell.
Wind remains a challenge, but it's improving. Ideal wind reaches 17%. Although NNW still dominates at 37.5%, the intensity drops - only 13.3% of winds are 20-30kph, versus 16.4% in August. Offshore E/ESE/SE/SSE winds double to about 8.1%. Water temp is at its warmest of the year, 18.2°C (65°F), and air averages 19.8°C (68°F). September offers the first real opportunity for clean, fun waves before the full autumn push.
Average Spot conditions at Sao Pedro de Moel in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sao Pedro de Moel 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 Sao Pedro de Moel for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sao Pedro de Moel 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 Sao Pedro de Moel.