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Conditions at Portrush in April
April: Transitional Gold
April is where Portrush becomes more user-friendly. Average swell backs off to 4-5ft (1.2-1.5m) and the period settles to 9.7s, but the directional spread is still beautiful: WNW dominates at 27.3%, W at 18.1%, NW at 11.1% and NNW at 8.2%. Wave heights cluster in the 3-6ft (0.9-1.8m) range, which is enough to push through the beach and hold a proper line. Ideal offshore wind jumps to 18%, and the wind rose shows a genuine split between NNW and E/ESE/SE. Chase the E/SE days and you will find clean, rippable waves with real shoulders; it no longer feels like a survival mission just to paddle out.
Spring conditions are kinder too: air 7.6°C, water 9.2°C and only 2.60 mm/day of rain. Add a good 4/3 and enjoy the first proper surf of the year.
Average Spot conditions at Portrush in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Portrush during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Portrush for April. 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.