Surf forecastStatisticsHistorical report

Middles seasonal overview

Best Surf Season (October - March)

The North Atlantic kicks into high gear from October through March, delivering the most consistent north-northeast swell to this north-facing beach. Average swell heights hover around 1.8-1.9m with periods frequently in the 9-10s range, offering powerful, long-period waves that can truly light up when the wind aligns. The real challenge? The dominant wind regime during these months is out of the east-northeast—a direct onshore flow that chops up the face. However, when a cold front sweeps through and winds clock to the southwest, the ocean grooms the lines into clean, orderly peaks. The ideal window is narrow (wind is perfect only 15-22% of the time), but the payoff is epic: thick, hollow walls that rewind the clock to classic point-break perfection.

Fair Surf Season (April, May, September)

As the jet stream retreats northward, the average swell height drops to 1.3-1.6m and periods settle into the 8-9s range. This is transitional territory. April and May see a significant uptick in offshore southerly wind days (ideal conditions reach 25-31%), which can turn even modest east-northeast swell into clean, rippable lines. The trade-off is that the north-northeast component of the swell becomes less frequent, so wave quality becomes more dependent on local sea breeze cycles rather than open-ocean storms. September offers a similar story: a late-summer spike in southerly wind frequency (30% ideal) coincides with the first north swells of autumn, making for a sneaky-good shoulder season where crowds thin and the ocean starts to wake up.

Low Surf Season (June - August)

Summer trades on the US East Coast are relentless. From June through August, the dominant wind howls out of the east-northeast more than 80% of the time, delivering a steady onshore flow that leaves Middles choppy, sectiony, and frustrating. Average wave heights drop to 1.3-1.4m and periods bottom out around 7-7.4s — short-period, wind-swell slop that struggles to organize on a north-facing beach. The swell direction is almost exclusively east to east-northeast (over 90% combined), which means waves approach at an oblique angle, offering only weak, closeout reformations. Offshore wind from the south is a rare event (13-18% of the time), and when it does arrive, it often comes with tiny, groveling conditions. This is the season to check in occasionally for a surprised glassy day, but the odds are stacked against you.

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Conditions at Middles in March

March: The Transition Begins

March brings a slight drop in average swell height to 1.8m but maintains a respectable 9.8s period. The north quadrant contribution stands at 47.1% (N/NNE/NE/NNW) — actually the highest of any month — thanks to lingering winter storm tracks. The east-northeast swell share is still robust at 38.3%. Wind patterns start to shift: east-northeast winds drop to 30.6% of the time, while southerly flows (S, SSW, SW) increase to a combined 3.3%, pushing the ideal wind frequency to 22%. This means more afternoons with clean, glassy conditions, especially when a coastal low slides north and draws in southwesterly breezes. The wave size is often in the 1.5-2m range, with the occasional pumping 2m+ day — the kind that turns Middles into a heavy, hollow left. It’s still a gamble, but the odds are improving.

Average Spot conditions at Middles in March

Swell history for March

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

Wind history for March

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

Swell quality

Analyze the groundswell consistency at Middles during March. 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 Middles for your next trip in March.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Middles for March. 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 Middles.

Swell with good wind

Swell with good wind by size