Conditions at Big Rock in March
March: Spring Transition Begins
March is the first month where the wind pattern starts to loosen its winter grip. Ideal offshore wind frequency climbs to 25%, with SSW/SW flow appearing in the wind rose, but the swell is still small: average height is 0.7m (2.3ft) and 0.5-1m (1.5-3.3ft) wave heights account for roughly 84% of the spectrum. The dominant swell directions are SE and SSE, which are less suited to this ENE-facing coastline and produce waves that are cross-shore and often soft. Periods improve to 8.1s, giving the energy a punchier feel, but the lack of height and the southerly angle leave Big Rock in a groveling phase. Air temperatures rise to 28.4°C, water temp reaches 28.6°C, and precipitation is still low at 0.33mm/day. The good news is the wind trend is your friend; the bad news is there is not yet enough quality swell to take full advantage.
Average Spot conditions at Big Rock in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Big Rock 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 Big Rock for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Big Rock 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 Big Rock.