Marinella - surf spot statistics

Best Surf Season (October - March)

The North Atlantic storm track ramps up significantly from October onward, delivering a steady diet of powerful, long-period swell to Marinella's WNW-facing shores. Average wave heights consistently range from 1.3m to 1.8m, with periods averaging 11.3s to 13.0s—ideal for generating punchy, well-shaped waves off the sandbars. The percentage of favourable offshore wind (from S through WSW) peaks between 41% and 49%, thanks to frequent high-pressure systems over the Bay of Biscay that funnel clean, light winds across the coast. This is the prime window for epic sessions, with the most consistent combo of solid swell and workable conditions.

Fair Surf Season (April & September)

As the seasons transition, April and September offer a mixed bag. Swell heights drop to around 1.1–1.2m and periods shorten to 10.6–11.0s, but the swell direction still favours the NW/WNW quadrant. The percentage of ideal wind dips to 29%, meaning more days with onshore flow from the W–NW. However, when a late-season low-pressure system aligns with a temporary ridge of high pressure, these months can produce surprisingly fun, rippable waves with lighter crowds. Keep an eye on the synoptic charts—the window for quality conditions narrows, but the reward can be worthwhile.

Low Surf Season (May - August)

Summer brings a dramatic lull in surf energy. Average wave heights hover around a marginal 0.9–1.0m, and periods drop to the 9–10s range—often too weak to overcome the prevailing onshore winds. The percentage of offshore wind plummets to 15–23%, with strong thermal breezes from the WNW–NNW quadrant dominating the wind rose. These winds are directly onshore for Marinella, chopping up what little swell arrives. While occasional long-period groundswell from distant southern hemisphere storms can sneak in, they are rare and usually overshadowed by unfavourable wind. This is the time for longboard groveling or a road trip to find more reliable summer breaks.

March: Winter Fading, Still Chunky

March sees a modest drop in average swell height to 1.6m and period to 12.2s, but the quality remains high. The WNW and NW swell directions still account for over 80% of the wave energy. The percentage of ideal wind decreases to 35%, reflecting a more transitional weather pattern. High-pressure systems begin to shift northward, allowing more frequent onshore flows from the W and NW. Nevertheless, when a cold front clears out and a ridge builds in, Marinella can still deliver excellent waves in the 1.5–2m range with good shape. March is a shoulder month where persistence often pays off, especially in the first half.