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Conditions at Portrush in October
October: The Roar Returns
The Atlantic switches back on in October. Average swell height climbs to 5-6ft (1.5-1.8m), period reaches 9.5s, and the directional data shows W at 18.7% and WNW at 18.0% leading the charge, with WSW adding 8.3%. This is the month when extratropical storms become organised, and Portrush's northwest exposure starts to see solid, powerful lines wrapping straight in. The catch is that ideal offshore wind drops to 11% and the wind rose is dominated by S, SSW and SW flow. The swell is there, but the window of clean E/SE wind is narrow. When a big low tracks north and high pressure builds from Europe, October can serve up some of the season's best waves.
Air temps average 9.8°C, water is still a tolerable 12.9°C, and rain increases to 3.78 mm/day. Time to dust off the hood and step up the board volume.
Average Spot conditions at Portrush in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Portrush 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 Portrush for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Portrush 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 Portrush.