Alvor - surf spot statistics

Alvor in Portugal offers surfable conditions year-round, but the best months for surfers seeking quality waves and favorable winds are typically from October to March. During this period, ground swell dominates, with percentages ranging from 62% in October and April to 88% in January, ensuring more consistent and powerful waves. The mean swell size is also larger, averaging 1.4m to 1.9m, with the biggest waves occurring in January, February, and December (1.9m). Wind conditions are less ideal, with bad winds (onshore or cross-shore) prevailing around 65-70% of the time, but there are still plenty of rideable days with good offshore winds (30-35%). The shoulder months of September and April can still provide decent surf, albeit with smaller swells (1.1m-1.5m) and slightly better wind conditions (38% good winds in September). From May to August, the surf quality drops significantly as wind swells take over, resulting in smaller, less consistent waves (1.0m-1.2m) despite marginally better wind conditions (33-36% good winds). July and August see the highest wind swell influence (81% and 74%) but remain the worst months for serious surfers due to weak swells. Overall, winter months (November-February) are prime for experienced surfers chasing solid ground swells, while intermediate surfers may find late autumn (October) and early spring (March-April) more forgiving.

In December, Alvor offers solid surf conditions with an average swell height of 1.9m and a quality period of 12.3s, providing well-organized, powerful waves. The dominant swell directions are from the NW, WNW, and W, with the largest waves (1.5–2.5m+) frequently arriving from these sectors. WSW and SW swells also contribute, though with slightly lower consistency. Smaller swells (under 1m) are rare, indicating consistent rideable waves most days. Wind conditions are favorable for surfing 30% of the time, with lighter winds (10–20kph) most common from N, NNE, and NW directions. Stronger winds (20–40kph) occasionally come from the N and NE, potentially creating choppier conditions, while offshore winds (E to SE) are less frequent but ideal when present. Overall, December delivers reliable, mid-sized waves with good power, though wind quality varies—best sessions occur when winds are light or offshore. Experienced surfers will find plenty of opportunities, especially on NW-WNW swells with manageable winds.