Sopelana - surf spot statistics

Best Surf Season (October - March)

The North Atlantic roars to life during these months, with powerful extratropical storms churning up long-period swell that pounds the Basque coast. Average wave heights hover between 1.5m and 2.1m, with periods often exceeding 12s – producing pumping, firing conditions at this NW-facing beach. The dominant swell directions (NW, WNW, NNW) align perfectly with Sopelana's exposure, while the frequency of offshore winds (S, SSW, SW, WSW) peaks around 30-38% of the time, especially in October. This is prime time for clean, powerful surf – the kind that draws the region's most committed crew.

Fair Surf Season (April, May, September)

As the jet stream relaxes, swells become more inconsistent and average height drops to 1.2-1.4m with periods around 10-11s. While the Azores High begins to dominate, occasional cold fronts still bring pulses of WNW-NW swell that can offer fun, rippable waves on a good day. April and May see a mix of small to fun-sized surf, often with lighter winds – though offshore breezes are less frequent (<28-35%). September is a transition month where the first autumn lows begin to stir, making it a sneaky good period for clean, punchy waves before winter sets in.

Low Surf Season (June - August)

Summer settles in and the swell machine shuts down. Average wave heights drop to just 1.0m with periods around 8.8-9.2s, resulting in small, groveling surf at best. The dominant swell remains from the NW quadrant, but waves rarely exceed 1.5m. Offshore wind percentages hover around 27-29%, but the main culprit is the lack of consistent swell energy. This is the season for longboard cruises and foil sessions – not the time to expect pumping waves. When a rogue NW groundswell sneaks in, the conditions can improve temporarily, but it's the quietest period of the year.

June: Summer Lull

June ushers in the summer flat spell. Average swell height is a meager 1.0m with a period of 9.2s – small, groveling at best. The swell rose shows extreme dominance from NW (54.1%) and NNW (23.1%), but nearly 50% of all waves are under 1m. Ideal wind stands at just 27%, with a pronounced increase in NE and ENE breezes (totaling ~20%) that blow onshore or cross-shore. The cleanest conditions are found during early mornings with light S or SSW flow. This is the month for longboard cruising and foiling – not for throwing buckets of spray.