Conditions at Rossnowlagh in April
April: Cleaner But Smaller
April marks the beginning of the fair season. The average swell height drops to 1.1m (3-4ft) and the period relaxes to 10.7s, still well within the rideable long-period range. The swell rose is still dominated by WNW at 30.3%, with NW and NNW each around 18% and W at 16.1%, but the heights are noticeably smaller: the bulk of the waves fall in the 0.5-1.5m range. The good news is wind quality improves, with ideal conditions 30% of the time -- the highest of the year. Northerly and north-northwesterly breezes become more common, and light offshore E/ESE winds show up often enough to unlock clean, lined-up surf. Air temperatures rise to 7.6°C, water is just starting to nudge up to 9.6°C, and precipitation drops to 2.9mm/day, making April a genuinely pleasant month to be in the water.
Average Spot conditions at Rossnowlagh in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Rossnowlagh 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 Rossnowlagh for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rossnowlagh 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 Rossnowlagh.