Cortegaoa - surf spot statistics

Best Surf Season (October - March)

The heart of the North Atlantic storm track fires on all cylinders from October through March, delivering a steady diet of powerful, long-period swell to Cortegaoa's west-facing shores. This is when the average wave height consistently sits between 1.5m and 1.8m, with average periods in the 11-13 second range – right in the sweet spot for a high-performance beach break. Extratropical cyclones deepen rapidly off the coast of Newfoundland and the Azores, sending pulse after pulse of W, WNW, and NW energy. Crucially, the wind regime shifts favorably during this window: continental high pressure often sets up over Europe, drawing in offshore breezes from the eastern quadrants (E/ENE/ESE). This combination of groundswell and glassy conditions produces the clean, rippable waves that make Cortegaoa a winter gem. The ideal wind percentage peaks at 48% in both December and January, and remains above 40% through February and November.

Fair Surf Season (April, May & September)

As the storm track begins to weaken in April and May, average wave heights drop to 1.1-1.3m and periods shorten to 10-11 seconds. Swell still arrives frequently from the WNW and NW, but the intervals become more inconsistent and the size less reliable. Wind patterns become more variable: the ideal offshore wind percentage falls to 22-29% as the Azores High strengthens and starts directing northerly winds along the coast. While these winds are not directly onshore, they create a cross-shore chop that can mess up the lineup. September marks the transition back toward winter, with a noticeable uptick in wave height (1.1m) and period (10.4s) and a recovery of ideal wind to 25%. Early autumn can still pull in clean SW-wind swells from distant lows, making for fun, warm-water sessions.

Low Surf Season (June - August)

Summer months bring the doldrums to Cortegaoa. Average swell height bottoms out at just 0.9m in July and August, with periods dropping to 8.8-9.0s – mostly weak, windswell-like waves from the NW and NNW. The dominant synoptic pattern features a strong Azores High sending persistent northerly winds (N, NNW) down the coast, which blow onshore or cross-shore for the west-facing beach and tear up what little wave energy exists. Ideal wind conditions occur only 10-14% of the time, typically during brief periods of early morning easterly drainage winds. While there are occasional pulses of longer-period swell from distant southern hemisphere storms, they rarely make it past the Azores before being blocked. For the average surfer, this is a time to travel or explore other breaks.

January: The North Atlantic in Peak Form

January brings the raw power of the North Atlantic to Cortegaoa. The average swell height hits 1.8m with an impressive average period of 12.7s, meaning frequent pulses of powerful, long-period groundswell. Swell direction is heavily dominated by the optimal WNW window (46.7%), with solid contributions from W (15.8%) and NW (16.1%). This means the wave quality is consistently high when the wind behaves. And it does: ideal offshore winds (from the eastern quadrants E/ENE/ESE) blow 48% of the time, thanks to high pressure over central Europe. The east side of the compass accounts for roughly a quarter of all wind observations, creating clean, groomed faces. The combination of powerful swell and glassy textures leads to pumping, firing waves in the 1.5-2.5m range – a true winter peak.