Cadiz seasonal overview
Best Surf Season (October - March)
Cadiz's surf year peaks when the North Atlantic kicks into gear. From October through March, the Gulf of Cadiz is exposed to a steady conveyor belt of low-pressure systems moving eastward across the Atlantic, sending consistent WNW, W and NW groundswell into this west-facing stretch. Average wave heights sit in the 4-6ft (1.2-1.8m) range, with periods regularly in the powerful 10-14 second band, especially in December, January and February. When the NAO dips negative, the storm track sags south toward Iberia and Cadiz is the beneficiary. Winds are more variable, but easterly offshore breezes plus lighter mornings produce clean windows 28-40 per cent of the time, making autumn and winter by far the most reliable surf season.
Fair Surf Season (April - May & September)
As winter lows weaken, the Atlantic pulse becomes shorter and smaller. April still averages 4ft (1.3m) at a punchy 9.3 seconds, but the wave quality becomes more dependent on localized windswell and early-season groundswell. May drops to around 3-4ft (1.1m) at 8.1 seconds, and September shows the first hints of a turnaround as new fronts brush the Iberian Peninsula. These are transitional months: clean on the right days when the Levante wind blows offshore, but frequently marred by onshore westerlies and smaller, less organized surf.
Low Surf Season (June - August)
Summer is the low tide of the Cadiz calendar. The Azores High locks the storm track far to the north, leaving the west-facing beaches with a diet of weak WNW windswell and short-period leftovers. Average heights dip to 2-3ft (0.8-0.9m) and periods drop into the 6.7-7.4 second range from June to August, often below the strength needed to break cleanly on the sandbars. The main issues are smallness and summer sea breezes, not wind direction alone - though offshore mornings can still produce groveling waves on a longboard. Surfable, but only if you adjust expectations.