Conditions at Rossnowlagh in October
October: The North Atlantic Roars Back
October is one of Rossnowlagh's classic months. Average swell height rises to 1.3m (around 4ft) and the period jumps to 10.9s, while the distribution of W, WNW, NW, and NNW swells covers 76.6% of the observations. The W and WNW windows are loaded with 1.5-2.5m energy: W has a substantial 4.6% in the 1.5-2m class and 1.8% in the 2-2.5m class, while WNW shows 7.1% at 1.5-2m and 3.5% at 2-2.5m. This is the start of the autumn/winter grind, when low-pressure systems rolling across the North Atlantic start delivering organized, long-period west swell. The wind is still the limiting factor, with SSW, SW, S, and SSE winds all near 9-10%; the ideal-wind share is 26%, so clean windows exist but are not handed out freely. Water temps are still manageable at 13.6°C, while air temps have cooled to 9.6°C.
Average Spot conditions at Rossnowlagh in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Rossnowlagh during October. 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 October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rossnowlagh for October. 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.