Conditions at Costa Nova in March
March: Transitional Power
March is a transitional month, but the ocean has not quite let go of winter. Average swell drops slightly to 2.3m (7-8ft) with an average period of 12.2s, and the swell window is remarkably consistent: NW (24.2 per cent) and WNW (20.5 per cent) dominate, with W adding 7.5 per cent. The majority of waves sit in the fun-to-pumping 1.5-2.5m (5-8ft) range, making for powerful but slightly more manageable conditions than midwinter.
The main story is the wind. The northerly regime begins to strengthen, with NNW reaching 21.2 per cent, while offshore ENE/E/ESE/SE winds become less frequent, leaving the wind ideal only 38 per cent of the time. Still, when an E/ENE offshore breeze meets a fading winter groundswell, March can produce some of the cleanest overhead days of the spring. Air temperatures warm a touch to 12.5°C, water reaches 14.0°C, and precipitation eases to 2.63mm/day, so the cold is slowly backing off.
Average Spot conditions at Costa Nova in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Costa Nova 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 Costa Nova for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Costa Nova 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 Costa Nova.