Yport seasonal overview
Best Surf Season (October - March)
Yport comes alive during the winter months as the North Atlantic cranks out consistent swell trains. Average wave heights range from 1.2m to 1.5m with periods averaging 7-8 seconds, providing punchy, rideable waves. The dominant swell directions from the west and southwest wrap around the Cotentin Peninsula, but the real gem is when a cold front pushes through and winds clock to the south, turning the sea glassy. The frequency of offshore winds (S, SSW, SW) peaks during this window, creating the most reliable surf at this north-facing beach. Deep low-pressure systems tracking across the British Isles generate the largest NW and NNW groundswells that hit Yport with maximum energy.
Fair Surf Season (April - June & September)
Spring and early autumn bring a noticeable drop in swell energy. Average heights fall to 0.8-0.9m and periods shorten to 6-7s, meaning smaller, more chop-dependent surf. The wind pattern shifts towards more variable directions, with NE and ENE breezes dominating, which are cross-shore at best. However, occasional warm fronts can still deliver S-SSW flow and a pulse of W swell, offering fun-sized waves on a groveler or fish. The increased daylight and warmer air temps make it worth the wait.
Low Surf Season (July - August)
High summer is the quietest period for Yport. Swell heights average under 1m and periods linger around 6 seconds, producing mostly short-period wind chop. The dominant wind flow becomes westerly and northwesterly, which blows directly onshore at this north-facing beach, ruining any chance of quality. Offshore winds from the south become rare (only 11-12% ideal). This is the time to explore other spots or take a break. Still, occasional long-period remnants of tropical storms can inject a few clean days.
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Conditions at Yport in September
September: Autumn Stirrings
September sees the first hints of autumn, with average swell height rising to 0.9m and period to 6.7s. The swell direction shows a shift: W (34.9%) still dominates, but WSW (14.4%) and NNE (5.8%) gain more presence. Offshore wind frequency remains low at 12%, but SW (8.4%) and SSW (6.5%) winds start to become more common again. The average period is still short, so waves are mostly wind swell, but a developing hurricane or early-season low can produce longer-period pulses from the NW and NNW. The best days come when a cold front moves through, swinging winds to the south and clearing the sky, offering clean, fun-sized waves on a shortboard or fish.
Average Spot conditions at Yport in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Yport 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 Yport for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yport 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 Yport.
