Somo seasonal overview
Best Surf Season (November - March)
When fall transitions into winter, the North Atlantic storm track starts firing straight into the southern Bay of Biscay, and Somo is the first beach to feel it. The beach's north-facing exposure means the region's dominant NW/NNW groundswells have a long fetch to build in, while average swell heights climb to 6-7ft (1.8-2.1m) and periods hang in the 12-13s range. The catch is that the same raw northwesterly energy often drags a cold front and onshore NW wind with it. The real magic comes when a storm pushes or stalls to the north and a high pressure ridge sets up over France, allowing S/SW/SO winds to groom the waves offshore. With ideal winds present 43-55% of the time, winter is by far the most consistent season for clean, powerful surf.
Fair Surf Season (April - May & September - October)
The shoulder seasons are a tale of two transitions. Spring sees the Azores High begin to expand while the ocean still holds some winter heat; average swells drop to 4-5ft (1.2-1.5m) and periods shorten to 10-11s. September and October are the better bet, as the Atlantic re-awakens and average periods creep back above 10-11s. Ideal wind percentages jump from the spring's 31-37% back to 38-50% by October. These months can produce classic Somo sessions - solid NW pulse, light S/SSW morning winds, warm water - but you will wait longer between swells.
Low Surf Season (June - August)
Summer is the quiet season. The Azores High parks over the eastern Atlantic, pushing the storm track north and leaving Somo with small, short-period NW/NNW windswell. Average wave heights hover around 3ft (1.0m), periods drop to 9s, and most waves are better suited for a longboard than a shortboard. Thermal sea breezes from the WNW often kick up in the afternoons, but early mornings can still deliver clean, rippable smaller waves when S/SSW breezes blow offshore. It is a fun, playful summer break rather than a serious surf destination.