Shipwreck Beach - surf spot statistics

Best Surf Season (December - February)

The heart of winter delivers the most consistent and powerful surf of the year. Average swell heights peak at 2.4m with long-period energy (12s+), fueled by the North Pacific storm track. The dominant NNW and NNE swells wrap effectively around the island, producing clean, hollow lines. Offshore winds from the north blow 22-26% of the time, creating prime conditions. While direct south swell is scarce, the sheer size and period of these northern pulses make for heavy, fast walls that are the highlight of the year.

Fair Surf Season (March, April, October, November)

The transitional months offer a mix of leftover winter power and early-season groundswell. March and April still see average heights around 2.1-2.3m, with periods in the 10-11s range, but the frequency of ideal offshore winds drops to 18-21%. October and November mark the return of consistent swell as autumn lows intensify, with heights climbing from 1.9m to 2.3m. The trade-wind influence is slightly less aggressive than summer, offering more windows of clean surf. Swell directions remain predominantly from the northern half of the compass.

Low Surf Season (May - September)

Summer brings the doldrums. Average swell heights fall to 1.7-1.8m and periods drop below 10s, resulting in weak, wind-affected surf. The persistent ENE trade winds blow over 50% of the time, generating choppy, cross-shore conditions. Ideal offshore wind days shrink to 11-20%, making clean waves a rarity. The swell that does arrive is mainly short-period easterly windswell, which lacks the power and organization to produce quality waves at this south-facing beach. This is the time for other activities or a crowd-free session if you can find a rare clean window.

January: The Winter Peak Unleashed

The North Pacific roars to life, and Shipwreck Beach reaps the rewards. Average swell height clocks in at 2.4m with a long-period 12.4s, delivering powerful groundswells that wrap around the island. The dominant swell direction is NNW (20.4% of observations), with significant contributions from NNE (8.7%) and NE (7.4%). Direct south swell is virtually nonexistent. These northern quadrant swells wrap effectively onto the south-facing shore, producing hollow, fast waves. Wind conditions are marginally favorable: offshore breezes from N, NNE, NW, and NNW blow 26% of the time, creating glassy mornings and evenings. However, the trade winds remain persistent – ENE dominates at 27.2% – bringing messy chop when they pick up. Look for days with a strong high-pressure ridge to the north that kills the trades and aligns the offshore flow. When it all comes together, you get solid 2m+ waves with long-period power – a true winter gem.