7 - 11 seasonal overview
Best Surf Season (December - February)
The heart of winter brings the most consistent and quality surf to 7-11. Strong extratropical cyclones track across the North Atlantic, sending powerful, long-period swell pulses from the eastern quadrant – exactly where this beach shines. Average wave heights hold steady around 1.2m with periods climbing to 7.0-7.3s, and the wind plays ball nearly half the time, with dominant offshore flows out of the W, WNW, and NW that groom the lines to perfection. When a cold front sweeps through and the skies clear, expect punchy, rideable waves with excellent shape. This is the prime window for experienced surfers to score.
Fair Surf Season (March - May & October - November)
The shoulder months offer a mixed bag of opportunity. As winter loosens its grip in spring, swell heights ease to 0.9-1.1m and periods shorten, while autumn sees a ramp-up in energy from early-season storms. Wind patterns become more fickle – the ideal offshore flow drops to 35-45%, and southerly components creep in, often ruining the surface. However, transitional periods between weather systems can deliver unexpected gems: a late-season nor’easter in March or a tropical low in October can flip the script, producing clean, lined-up sets. Patience and a flexible schedule are key.
Low Surf Season (June - September)
Summer throttles back the energy at 7-11. Average swell heights bottom out at 0.8m and periods fall to a weak 6.7-7.2s, yielding small, choppy conditions. The dominant swell source switches to the south – while SSE and SE swells are technically in the optimal window, they often arrive with onshore winds from the SSW-SW quadrant, creating bumpy, disorganized waves. Although ideal wind percentages hover around 41-46%, the lack of real swell size and power means only the most dedicated longboarders or beginners will find fun on rare glassy mornings. It’s a time for cruising and avoiding the summer crowds that swarm the beach.
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Conditions at 7 - 11 in December
December: Peak Winter Excellence
December delivers the best overall conditions of the year. Average swell height peaks at 1.2m with a period of 7.3s, but the real story is the wind: ideal 49% of the time – the highest of any month. Dominant winds from WNW (16.2%), W (12.5%), and NW (12.0%) blow clean offshore, grooming the waves perfectly. Swell direction is balanced, with notable contributions from SSE (7.5%), SE (6.3%), ESE (7.1%), and E (8.4%) – all optimal. The combination of consistent, punchy swell and reliable offshore flow produces long, clean waves that barrel on the right tide. December is the month to clear your schedule and camp the forecasts – this is when 7-11 truly fires.
Average Spot conditions at 7 - 11 in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at 7 - 11 during December. 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 7 - 11 for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at 7 - 11 for December. 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 7 - 11.
