Bundoran - surf spot statistics

Best Surf Season (October - March)

The North Atlantic roars to life from October through March, delivering the most consistent and powerful swell to Bundoran's west-northwest facing beaches. During these months, average wave heights hover between 1.3m and 1.8m, with periods often exceeding 12 seconds, producing that long-period, groundswell energy that wraps perfectly into the bay. While onshore winds from the W and WNW are common, the region sees a solid 28-31% of time with offshore winds from the east and southeast, creating clean faces on those pumping WNW pulses. Winter storms spin up deep lows in the North Atlantic, and when the timing aligns with high pressure over Scandinavia, Bundoran fires at its finest.

Fair Surf Season (April & September)

April and September offer transitional windows where the ocean still holds plenty of energy, but the consistency drops. Average swell heights settle around 1.1m with periods around 10-11s, providing fun, rideable waves, especially for groveling and shortboards. Wind conditions are actually a bit more favorable during these months — April sees 32% ideal wind, the highest of the year — but the swells are less organized. These months can deliver excellent sessions if a late-season storm pushes through or early autumn lows develop, but overall, it's a step down from the prime winter season.

Low Surf Season (May - August)

From May through August, Bundoran takes a summer siesta. Average wave heights drop below 1m, periods shrink to 8-9 seconds, and the percentage of ideal offshore wind plummets to 16-19%. The swell is dominated by short-period, windswell from the W and WNW, but it often comes with onshore breezes from the same quadrant. These months are for the die-hards — small, choppy conditions prevail, but you can still find clean corners on a longboard during rare easterly wind days. It's the low season for a reason: wait for the autumn equinox to bring life back.

October: The Big Comeback

October marks a significant step up in surf conditions. Average swell height reaches 1.3m, period 10.9s, and the ideal wind percentage jumps to 30%. The swell is dominated by WNW (29.2%) and W (19.4%), with increasing contributions from NW. Wave heights in the 1.5-2.5m range account for over 25% of the total, providing pumping, firing waves. Wind patterns shift favorably: onshore westerlies decrease to around 31%, while offshore easterlies (ENE through SE) make up over 21%. The Atlantic storm track is becoming active, and lows spinning off Greenland send long-period swell towards Bundoran. When high pressure sits over the North Sea, light E winds groom the lines to perfection. October is the start of the prime season.