Somo - surf spot statistics

Best Surf Season (October - March)

The North Atlantic winter machine kicks into high gear from October through March, delivering consistent, powerful NW groundswells to Somo's north-facing beach. During these months, average wave heights range from 1.6m to 2.1m with long-period energy (11-13s) that translates into clean, rippable waves when the wind plays ball. The key is a strong Azores High or a passing low pressure system that draws in offshore S/SSW winds. December leads the pack with 55% ideal wind conditions, making it the prime month for scoring pumping, firing waves. However, be ready for bouts of onshore NW wind that can turn things messy – patience and a sharp eye on the forecast are essential.

Fair Surf Season (April - May & September)

As spring sets in, the Atlantic storm track begins to shift north, reducing swell frequency and size. April and May see average heights drop to 1.5m and 1.2m respectively, with periods shortening to 10-11s. The wind windows become narrower, with ideal conditions only 31-37% of the time. Still, when a late-season low pressures swings by, we can get fun, rippable surf under sunny skies and light offshore breezes. September marks the transition back to winter, with increasing swell and improving wind odds (38% ideal), offering a taste of what's to come.

Low Surf Season (June - August)

Summer is the quietest time at Somo. The Atlantic storm belt retreats far north, leaving the Bay of Biscay with small, short-period swell (average 1.0m, 9s) mostly from local NW windswell. Offshore wind conditions are scarce (24-28% ideal), and the prevailing onshore N/NW breezes often ruin what little wave energy exists. While you might find a few clean shoulder-high days if a southerly wind pattern sets up, this is generally a time for flat spells and groveling on the small stuff. Best to save your energy for the winter months.

January: The Depths of Winter Power

January is the heart of winter at Somo, with an average swell height of 2.1m and a commanding 12.9s period – the longest of the year. The swell is overwhelmingly from the NW (36% of all waves), with significant contributions from WNW (17.5%) and NNW (11.1%). This means the beach is consistently exposed to powerful, long-period groundswell that can produce heavy, firing conditions. The wind, however, is the deciding factor. While ideal offshore winds from the S/SSW quadrant blow 52% of the time, the remaining 48% brings onshore winds from the NW and W, which can chop up the waves. The magic happens when a low pressure system tracks north of the Bay of Biscay, wrapping in a southerly flow. On those days, you'll find glassy, grooming conditions over 1.5-2.5m swell – pure surf heaven. Be prepared for occasional XL pulses over 2.5m that demand respect.