Surf forecastSpot statisticsHistorical report

Arrifana seasonal overview

Arrifana in Portugal offers consistent surf conditions year-round, but the best months for quality waves are typically from October through March, aligning with the Atlantic swell season. During these months, ground swell dominates (74-90% of the time), with mean swell heights ranging from 1.7m to 2.0m, providing powerful and well-formed waves. Winter months, particularly December and January, deliver the largest swells (2.0m on average) and the highest ground swell frequency (82-90%), making them ideal for experienced surfers seeking bigger waves. However, wind conditions are less favorable in winter, with only 26-32% of days having good winds, meaning offshore or light winds are relatively rare, and cross-shore or onshore winds are more common. Spring (April-May) and autumn (September-November) offer a balance of ground and wind swells, with September and October seeing improving wind conditions (31-32% good wind days) and decent swell sizes (1.5m-1.7m). Summer (June-August) is the least consistent, with wind swells prevailing (70-81%) and smaller waves (1.0m-1.1m), though it can still provide fun sessions for beginners or longboarders, especially in early morning when winds are lighter. Overall, advanced surfers will find the best conditions from late autumn to early spring, while intermediate and beginner surfers may prefer the smaller, more forgiving waves of late spring or early autumn when winds are slightly more favorable.

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Conditions at Arrifana in May

In May, Arrifana offers decent surfing conditions with an average swell height of 1.3m and a solid period of 10.1s, indicating consistent, well-formed waves. The dominant swell directions are NW and WNW, contributing to the majority of rideable waves, particularly in the 1-2m range, which makes up a significant portion of the swell distribution. This favors the spot’s exposure, delivering clean and powerful waves when paired with the right wind conditions. However, ideal offshore winds (blowing from the northeast) occur only 22% of the time, while onshore winds from the NW and W are more common, potentially creating choppier conditions. Winds between 10-30kph prevail, with stronger gusts occasionally coming from the north and northwest. Surfers can expect a mix of clean and messy days, but when the winds align, the NW/WNW swells provide quality waves, especially in the 1-2m range—ideal for intermediate to advanced surfers. Overall, May is a decent month with variable conditions, requiring careful wind checks for optimal sessions.

Average Spot conditions at Arrifana in May

Swell history for May

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for May

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Arrifana during May. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Arrifana for your next trip in May.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Arrifana for May. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Arrifana.

Swell with good wind

Swell with good wind by size