Wainui Beach • Surf Spot Statistics

Best Surf Season (April - July)

The change of season from autumn into winter is when Wainui Beach finds its rhythm. As Southern Ocean storms grow more organized and low-pressure systems parade across the Tasman Sea, average wave heights climb from around 6ft (1.8m) to 7ft (2.1m) and swell periods push into the 10.7 to 11.0 second bracket. At the same time, the prevailing wind flow becomes increasingly westerly, with the NW-NNW quadrant taking charge. That is the perfect recipe at this east-southeast facing beach: raw, long-period E to SSE groundswell meeting an offshore wind that grooms it into clean, rippable walls. May and June are especially consistent, with ideal wind frequencies hitting 54 percent - about as good as it gets on this coast.

Fair Surf Season (March, August - October)

These shoulder months are a transition zone between the summer doldrums and the winter meat. March and August still pack a decent punch, with average swells between 6-7ft (1.8-2.1m) and periods near 10.5 seconds, but the directional quality is more variable. September and October see the Southern Ocean swell machine starting to throttle back, yet the westerly wind flow remains strong, giving plenty of clean, if slightly smaller, days in the 5ft (1.5m) range. For surfers who don't mind a little less size, this window often delivers the best combination of manageable waves and offshore conditions.

Low Surf Season (November - February)

The summer months are the quietest time on the calendar. Average wave heights drop to around 5ft (1.5m), average periods fall back to 9.6 to 9.9 seconds, and ideal offshore wind frequencies dip to 38 to 41 percent. The high-pressure belt that settles over New Zealand tends to weaken the long-period groundswell supply, while local sea breezes often kick in from the northeast and east during the afternoon, compromising the line-up. That's not to say it ever goes completely flat - tropical lows and subtropical disturbances can fire up fun E/ESE swell events, especially with an early morning NW offshore - but for consistent quality surf, the summer months are definitely the trade-off window.