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Conditions at Portrush in March
March: Spring Thaw, Same Power
March keeps the winter engine running but adds more sparkle. Average swell drops only slightly to 6-7ft (1.8-2.1m) and periods remain a solid 11.0s, with the swell rose leaning even harder toward WNW at 22.3% and W at 19.6%. This is still prime time for Portrush to light up, but the good news is that the ideal offshore wind percentage improves to 13% as spring highs begin to build. Winds from S through SW still dominate, meaning the heavy WNW groundswell often has a cross-shore or bumpy element to deal with. Pick the E/ESE/SE days and the whole character of the beach changes.
Air temp edges up to 5.8°C, water temp is 8.0°C, and precipitation drops to 2.79 mm/day. Spring is waking up, and so are the chances of a glassy, lined-up day.
Average Spot conditions at Portrush in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Portrush 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 Portrush for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Portrush 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 Portrush.