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.

March: Transitioning Power, Consistent Swells

March starts with winter's strength but begins a gradual decline. Average swell height drops to 1.5m, period to 11.9s. The swell remains heavily NW-WNW-W dominant, with WNW alone accounting for 30.4% of energy. Wave heights are still solid: over 30% in the 1.5-2.5m range, providing rippable to heavy waves. Wind-wise, ideal offshore directions (ENE-E-ESE-SE) are present about 20% of the time, while onshore westerlies blow around 27% of the time. The ideal wind percentage holds at 28%. March offers a good balance: fewer huge swells but still plenty of chest to head-high waves. Spring lows can still kick, and with longer daylight, the window for dawn patrol sessions with light E winds is promising.