Conditions at Praia do CDS in September
September: First Signs of Life
September is the surf forecaster's favorite month of transition. The average swell is still summer-like at 3.5ft (1.1m), but the period stretches to 10.5 seconds as the first autumn lows begin to form in the North Atlantic. NW remains overwhelmingly dominant at 50 percent, but WNW jumps to 32 percent and W to 9 percent, bringing more 5-6.5ft (1.5-2m) pulses than either July or August.
Wind quality is the best of the year at 35 percent ideal, and while NNW is still the most common wind at 43 percent, the offshore SSW/SW/WSW/W windows become more frequent and longer lasting. With water still warm at 18.4°C and air at 19.9°C, September offers that perfect balance: warm water, decreasing crowds and the first proper groundswells of the season. Precipitation starts to pick up at 0.89mm/day, but overall it remains a high-value surf month.
Average Spot conditions at Praia do CDS in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Praia do CDS 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 Praia do CDS for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Praia do CDS 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 Praia do CDS.