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 September

September at Arrifana offers decent surf conditions with a mix of swells and variable winds. The average swell height is 1.1m with a solid period of 10.5s, indicating good energy for rideable waves. The dominant swell directions are NW and WNW, which align well with the beach, providing the most consistent and sizable waves (1-2.5m range) approximately 53% of the time. Smaller swells (0.5-1.5m) from W and WSW also contribute, though less frequently. Wind conditions are ideal for surfing only 31% of the time, with the best scenario being light offshore or cross-offshore winds (N to ENE). However, stronger onshore winds (WNW to NNW) occur frequently, potentially creating choppy conditions. Overall, September can deliver fun, mid-sized waves with clean conditions mainly in the mornings or during periods of favorable wind. Advanced surfers will find the best sessions when NW swells coincide with lighter winds.

Average Spot conditions at Arrifana in September

Swell history for September

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

Wind history for September

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

Swell quality

Analyze the groundswell consistency at Arrifana during September. 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 September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Arrifana for September. 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