Alvor seasonal overview
Best Surf Season (October - March)
The North Atlantic roars back to life during October, and Alvor's SSW-facing sandbars start to feel the pulse of long-period groundswell. Average wave heights run 1.1-1.4m (3.5-4.5ft) with periods in the powerful 11-13s range as extratropical cyclones deepen and track across the Atlantic. The key for Alvor is the combination of direct S/SW/SSW swell and offshore N/NNE/NE/NNW winds; when these align, the sandbar delivers clean, rippable, sometimes pumping waves. The negative phase of the NAO can shunt low-pressure systems further south, sending more southwesterly energy into the Gulf of Cadiz and making these the most exciting months of the year. Water temperatures sit in the 15-17°C range, so a solid wetsuit is part of the deal, but the reward is the most consistent and powerful surf on the calendar.
Fair Surf Season (April - May - September)
This is the transitional zone at Alvor. April still sees a 1.1m (3.5ft) average with 10.8s periods, while May and September slide down to 0.8-0.9m (2.5-3ft). The wave rose becomes dominated by W/NW/WNW energy, which is less direct for the SSW-facing beach and relies heavily on wrapping around Cape St Vincent. Ideal wind percentages fall to 31-38%, with morning NNW/NW flows often grooming the surf before sea breezes and thermal winds add texture. These months are best for longboarders, small-wave rippers, and those willing to hunt for the occasional early/late south groundswell that sneaks into the window. Air temperatures are comfortable and water temps climb from 16.4°C to 19.6°C, making these pleasant, if less explosive, surf months.
Low Surf Season (June - August)
Summer at Alvor is a waiting game. Average wave heights bottom out at 0.7-0.8m (2-2.5ft) with periods dipping to 8-9s, meaning the energy is mostly short-period NW windswell and heavily refracted background swell. The NW quadrant dominates the wave rose to an extreme degree - in July alone, NW and WNW together make up over 80 percent of the swell directions. Direct S/SSW/SW groundswell is almost absent. Thermal-driven NNW and NW winds increase through the day, and while they are technically offshore for parts of the morning, they often become cross-shore and render the small waves messy. Water temps reach a warm 19.1-19.6°C and rain is nearly nonexistent, so it is glorious for beachgoers, but surfers need ultra-low expectations or a hurricane swell from the tropical Atlantic to light things up.