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Cox Bay - surf spot statistics
Cox Bay seasonal overview
Best Surf Season (October - March)
The winter months bring consistent, powerful swell from the North Pacific, with average heights easily reaching the 2.0-2.6m range and long periods of 12-13 seconds. The Aleutian Low pumps out a steady stream of WNW to SW groundswell that hits Cox Bay's west-facing beach perfectly. Offshore winds from the east (E, ENE, ESE) blow clean 34-41% of the time, creating glassy conditions on the best days. This is prime time for pumping, firing waves in the 1.5-2.5m range, with occasional XL days pushing over 2.5m that demand respect.
Fair Surf Season (April & September)
As the seasons transition, the North Pacific storm track weakens in April and reawakens in September. Average swell drops to 1.9m in April and 1.5m in September, but long-period groundswell (11-12s) still arrives from the W and WSW. Offshore wind frequency sits around 29-30%, meaning clean windows are less predictable but still rewarding when they align. Expect fun, rippable waves in the 1-1.5m range with occasional solid sets reaching 2m.
Low Surf Season (May - August)
The summer lull takes hold from May through August, with average swell heights dwindling to a paltry 1.2-1.5m and periods holding steady around 11.4s. The swell direction is dominated by W and WSW, but these waves are often small, fun-sized or even micro (<0.5m) during flat spells. Offshore wind conditions are the worst of the year, with ideal winds occurring only 14-21% of the time. The prevailing onshore flow from the NW and W ruins wave quality, leaving mostly choppy, messy conditions. Summer only delivers a few standout days when early-morning easterly winds coincide with a rare pulse of waist-high swell.
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Conditions at Cox Bay in March
March: Late Season Swells
March maintains the winter momentum with an average height of 2.2m and a period of 12.0s, still producing fun, good to pumping waves. The swell direction shifts slightly to favor WSW (23.0%) and W (24.0%), meaning the best waves come from straight onshore to slightly west of the beach. The offshore window tightens to 35% ideal wind, with ENE and E winds at 15% combined. The risk of onshore WNW flow (14.3%) grows as spring transitions begin. Still, when a late-season storm delivers a very powerful 10-14s swell from the SW, and the wind goes light easterly, you can score overhead peaks with clean faces.
Average Spot conditions at Cox Bay in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Cox Bay 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 Cox Bay for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cox Bay 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 Cox Bay.