Cadiz - surf spot statistics

Best Surf Season (October - March)

During these months, the North Atlantic delivers consistent, powerful swell to Cadiz's west-facing coastline. Average wave heights range from 1.2m to 1.6m, with long periods averaging 9.5-11.6s, thanks to strong extratropical storms tracking across the North Atlantic. The percentage of ideal offshore winds (from the east quadrant) peaks between 31% and 40%, offering frequent clean conditions. The NAO index often plays a crucial role; a negative NAO can push the storm track further south, sending larger, more consistent swell into the Gulf of Cadiz. This is when the spot truly shines, with pumping surf on offer.

Fair Surf Season (April - May & September)

The transition months see a noticeable drop in both swell size and period as the North Atlantic storm track weakens. April and May average 1.1-1.3m with periods around 8-9s, while September sees a slight resurgence. Ideal wind frequency drops to 20-26%, but windows of clean, fun-sized surf still occur, especially when high pressure sets up over the Iberian Peninsula, generating easterly breezes. This is a good time for longboarders or those seeking a relaxed session.

Low Surf Season (June - August)

Summer is the quietest period. Average swell heights drop to 0.8-0.9m with short periods of 6.7-7.4s. The dominant swell comes from the WNW and NW, but often lacks energy. Ideal offshore winds occur only 20-21% of the time, and when they do, the waves are usually small and weak. The Mediterranean influence and high pressure aloft suppress storm activity. Micro-surf or groveling conditions prevail, rarely exceeding fun-sized. It's a good season for a surf trip elsewhere or to enjoy the beach lifestyle.

August: The Flattest Month

August brings the lowest average swell height of the year — just 0.8m — with a period of 7.1s. The dominant swell direction is again WNW (62.9%), with the vast majority in the 0.5-1m range (48%). W swell (10.7%) is also small. Ideal offshore wind conditions inch up slightly to 21%, but the waves are simply too small to offer much excitement. Eastern winds (E 6.0%, ESE 13.2%) still provide the cleanest windows, but surfable waves are rare. This is the ultimate low surf season month.