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Conditions at Westport Breakwater in March
March: Autumn's In-Between Energy
March marks the beginning of the autumn transition: average swell height bumps to 2.1m (around 7ft) and period lengthens to 12.3s. The swell distribution still favors WSW (47.5 percent) with W at 10.0 percent and WNW at 5.3 percent, but the 1.5-2.5m (5-8ft) classes become more compact, and there is a slight increase in NW/NNW energy compared to February. This is the first hint of the colder months' more consistent northwest groundswell windows that Westport Breakwater really needs to fire cleanly.
Ideal wind remains steady at 48 percent, with SW winds again leading the charge at 18.1 percent and SSW/S combining for another 14.5 percent. The onshore N/NNE/NNW/NW flow is still a significant 18.6 percent, but it is less stubborn than in summer. Water temps are still comfortable at 17.0°C, air temps average 15.0°C, and precipitation bumps slightly to 3.77 mm/day. Expect a mix of autumn low-pressure systems and lingering high-pressure ridges-when the pressure gradient aligns, Westport gets clean offshore mornings with 7ft (2.1m) of long-period pulse.
Average Spot conditions at Westport Breakwater in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Westport Breakwater 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 Westport Breakwater for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Westport Breakwater 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 Westport Breakwater.