Portsalon seasonal overview
Best Surf Season (March - May)
Spring brings the most favorable blend of swell direction and wind at Portsalon. While the North Atlantic still pumps long-period groundswells, the frequency of swell from the optimal NNE to E sector peaks during these months, reaching nearly 6% of all observations in May. Simultaneously, offshore SSW to W winds become more consistent, with ideal wind percentages climbing to 28-32%. This window offers the highest likelihood of groomed, rippable waves, though size often maxes out in the fun to solid range (1-2m). It's a season of quality over quantity.
Fair Surf Season (October - February)
The heart of winter delivers serious size—average swell heights of 2.7-3.2m and periods of 11-12.4s—as powerful extratropical cyclones march across the North Atlantic. However, the swell's dominant W to NW orientation (not optimal for this NE-facing beach) and consistently strong onshore winds from the north and east (blowing directly from the bad quadrant) mean only about a quarter of the time finds true offshore flow. When a high-pressure ridge sets up and a sharp low tracks south, you get a short-lived blast of long-period W swell with light land breezes, turning Portsalon into a powerful, heavy playground for experienced surfers.
Low Surf Season (June - September)
Summer sees the North Atlantic energy dial way back. Average swell heights drop to 1.4-2.0m and periods fall below 10s, often producing small, weak, and wind-swell dominated waves. While the percentage of ideal offshore wind peaks at 39% in July and August, the lack of substantial swell direction from the east sector (only 1.9-2.6% combined) and the prevalence of choppy, short-period swell make for inconsistent, micro conditions. It's a flat spell punctuated by rare fun-sized days when a stray E swell coincides with a westerly breeze.
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Conditions at Portsalon in October
October: Power Building, Direction Still West
October sees a sharp jump in average swell height to 2.4m and period to 10.6s. The North Atlantic roars to life as extratropical storms proliferate. Swell is still predominately from the W (14.9%) and WNW (12.8%), but the optimal E sector totals 3.9%—a slight improvement over summer. Ideal wind percentage holds at 27%, with strong offshore components from the SW (10.3%) and SSW (9.4%). This creates a classic autumn scenario: big, long-period groundswells with intermittent windows of offshore wind. The wave quality is often raw and powerful, with plenty of heavy walls. Seasoned surfers will find this month offers the best balance of size and condition frequency.
Average Spot conditions at Portsalon in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Portsalon during October. 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 Portsalon for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Portsalon for October. 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 Portsalon.
