Conditions at Foz in March
March: Late-Winter Groundswell with Spring Tension
March is a transition month but still delivers. Average swells ease slightly to 1.5m (5ft), while the period remains strong at 11.8s - enough to maintain deep-water power. NW/NNW swells dominate, with NW at 35%, NNW at 25% and WNW at 12%; the optimal window holds about 74% of the total energy. Winds are slowly changing: SSW and SW still combine for 27%, but the ENE flow has strengthened to 18%, making the mornings and evenings the most reliable for clean surface conditions. The clash between lingering winter storms and the building Azores High can produce excellent ramps in the morning, followed by lumpy afternoon sea breeze. Water temp is at its annual low of 12.9°C, air averages 8.9°C, and rainfall is 2.7mm/day. Keep the winter wetsuit close because March can either roar or fade.
Average Spot conditions at Foz in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Foz 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 Foz for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Foz 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 Foz.