Praia do CDS - surf spot statistics

Best Surf Season (October - April)

The winter months deliver the most consistent swell energy to Praia do CDS, courtesy of a relentless parade of North Atlantic low-pressure systems. Average wave heights consistently exceed 1.5m, with periods regularly pushing into the 12-13 second range — powerful, long-period groundswells that wrap into the beach. The east-northeast-facing orientation means the best swell aligns from the west-northwest to northwest, while a negative NAO index often locks in the ideal offshore wind pattern from the southwest to west. However, during these months, onshore winds from the east-northeast are also common, cutting down the ideal wind window to about 23-35% of the time. Still, when the stars align, this is when Praia do CDS truly fires with pumping, pitching waves.

Fair Surf Season (May & September)

The shoulder months offer a trade-off: smaller, but cleaner surf. Average swell heights drop to around 1.2m in May and 1.1m in September, with periods settling into the 10-10.5-second range — fun-sized, rippable waves on the better days. The likelihood of offshore winds (from the southwest through west) increases to 33-35%, meaning more glassy mornings. However, the swell becomes more windswell-dominated, and the long-period groundswells that make winter epic are less frequent. These months are perfect for groveling on small craft if you time the swell windows.

Low Surf Season (June - August)

Summer is a tough time for consistent surf at Praia do CDS. The North Atlantic storm track retreats northward, and average swell heights hover around 1.0-1.1m with periods under 9.5 seconds — primarily short-period, local windswell. The predominant wind pattern becomes the northerly ‘Nortada’ trade wind, which blows strong and steady (often 20-30+ kph) from the north to northwest. While these winds are not directly onshore (the beach faces ENE), they create a choppy, messy sea state when combined with the weak, short-period swell. Ideal wind days from the west-southwest are rare, dropping to around 26-27% of the time. Only the occasional summer groundswell from a southern hemisphere storm or a rare tropical system can salvage a session, but these are few and far between.

September: The Turn of the Tide

September begins the transition back to winter. Average swell height remains low at 1.1m, but the period starts to climb to 10.5s — a sign of returning groundswell. Swell direction is still heavily NW (50%) and WNW (32%), but the wind pattern improves dramatically. The N and NNW winds back off slightly (N 23%, NNW 27%), and ideal offshore wind reaches 35% — the highest of the year. Light variable winds in the mornings become more common, and the sea breeze is less aggressive than mid-summer. This is the month where early season North Atlantic storms begin to spin up, sending the first long-period pulses of the autumn. While the average height is still modest, the quality is often excellent on the better days. If you can snag a day with a building WNW swell and a light SW wind, you'll find fun, clean waves with autumn sunshine — a true sweet spot.