Conditions at Rossnowlagh in March
March: Spring Threshold
March is transition month, but it still packs a punch. Average swell height remains at a solid 1.5m (around 5ft), and the average period of 11.9s means the swell retains real power. The swell direction distribution is led by WNW at 30.4%, followed by W at 19.3%, NW at 14.8%, and NNW at 10.4%, so the beach remains fully exposed to Atlantic groundswell. The main difference from January and February is a slight drop in the biggest size range: more energy sits in the 1-2m bracket, making it slightly more manageable. Wind statistics still favor WSW, W, SW, and SSW, and only 24% of time is ideal, so the window hunting continues. Water temperature is still a chilly 8.3°C, air temps average 5.7°C, and rain is a bit less frequent at 3.3mm/day.
Average Spot conditions at Rossnowlagh in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Rossnowlagh 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 Rossnowlagh for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rossnowlagh 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 Rossnowlagh.