Conditions at Guincho in March
March: Transition Month with Winter Upside
March is still firmly in the winter swell window, but the engine is starting to spool down. Average swells of 7-8ft (2.1-2.4m) and 12.3s periods mean plenty of powerful NW and WNW groundswell, with the 1.5-2.5m (5-8ft) range the most common size - exactly the kind of solid, firing surf Guincho is known for. The catch is wind. The northerly regime is strengthening: NNW winds reach 23.5%, and ideal offshore wind drops to 18%. As the Atlantic warms slightly to 14.7°C and air temps climb to 14°C, spring sunshine becomes more common, but the standard pattern is a clean early morning, a breezy afternoon and punchy conditions in between. Precipitation averages 1.7mm per day. Look for a low-pressure trough lingering off the Iberian coast - it can flip the flow into the offshore eastern quadrant and turn March into a sleeper month for heavy, long-period surf.
Average Spot conditions at Guincho in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Guincho 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 Guincho for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Guincho 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 Guincho.