Conditions at Sines in March
March: Winter Power With a Spring Twist
March is the last true winter month for Sines. Average swell height eases slightly to 6.9ft (2.1m), while average period drops to 12.4 seconds, still enough to qualify as powerful, long-period groundswell. NW swell is the clear leader at 30.2 percent, followed by WNW at 23.1 percent, and the overall distribution still favors big open-ocean surf. The south-facing spot continues to need a SW/WSW component, and those directions make up around 4 percent of the total - small but potentially high-impact when they line up. With ideal wind 50 percent of the time, March is a great month to score less crowded, classic winter waves before the springtime transition takes hold.
Air temperatures warm to 13.6°C, with lows near 1.1°C and highs up to 27.0°C. Rainfall holds at 1.65 mm per day and water temperature is 15.1°C, still cool but beginning to stabilize.
Average Spot conditions at Sines in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Sines 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 Sines for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sines 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 Sines.