Praia do CDS - surf spot statistics

Praia do CDS in Portugal is a surf spot with consistent conditions year-round, but the best months for surfers generally fall between October and March, when ground swell dominates and wave heights are more favorable. During these months, ground swell frequency ranges from 63% (October) to 91% (January), with mean swell sizes between 1.5m and 2.1m, peaking in January and December. Wind conditions are less ideal, with good wind days averaging only 24-29% from November to February, but the strong, clean ground swells often compensate for the prevailing onshore winds. The winter season offers the most powerful and consistent waves, though the highest percentage of bad wind conditions (up to 76% in December) means patience is required. From April to September, ground swell diminishes significantly (15-64%), replaced by wind swell, and wave heights drop below 1.6m, making the surf smaller and less reliable. However, late spring and summer (May-August) see slightly better wind conditions (32-38% good wind days), but the swell is weaker and mostly wind-driven. September and October serve as transitional months, with improving ground swell and manageable wind conditions—offering a good balance between consistency and rideable waves. Overall, advanced surfers will prefer the winter months for sizable, clean ground swells, while intermediates may find better opportunities in late autumn or early spring when winds are less harsh and waves remain surfable.

In September, Praia do CDS offers surfers a mix of manageable and occasionally promising conditions. The average swell height sits around 1.2m with a solid period of 10.6s, suggesting well-formed, rideable waves—especially when WNW and NW swells dominate, bringing the most consistent energy (peaking in the 1-1.5m and 1.5-2m ranges). These directions account for the majority of larger waves, though W and WSW swells also contribute, often with slightly less power. Wind conditions are favorable 38% of the time, primarily when lighter (0-20kph) and from the N/NE, avoiding onshore interference. However, stronger N/NW winds (20-30kph+) can create chop, particularly in the afternoons. Expect the best sessions early mornings when swells align with lighter offshore flow. While not a big-wave month, September delivers fun, mid-sized waves with enough power for turns and carves, especially on NW pulses. Keep an eye on wind shifts—the spot handles some cross-shore SW flow, but pristine conditions rely on those cleaner NNE moments.