Little Wanganui - surf spot statistics

Best Surf Season (June - August)

The heart of the Southern Hemisphere winter roars to life, bringing consistent, powerful W to WNW swells that wrap perfectly into Little Wanganui's NW-facing beach. Combined with the highest percentage of offshore ESE/SE winds, this period delivers pumping conditions. Average swell heights hover around 2.1m with periods averaging 12.4s, meaning solid, long-period groundswells dominate. The Tasman Sea storms are in full swing, and when high-pressure systems park themselves to the south, we get clean, offshore flow. This is the prime window for the heaviest, most consistent surf of the year.

Fair Surf Season (April - May, September - October)

The shoulder seasons offer a blend of good swell and moderate wind conditions. In autumn (April-May), the transition begins: swell sizes are still solid (1.9-2.1m) with long periods, and the wind becomes increasingly favorable, peaking at 49% ideal in May. Spring (September-October) sees a gradual decline in swell consistency, but still plenty of W swell with periods around 12.2s. However, wind patterns become more mixed, with a higher chance of onshore westerlies. These months require a keen eye on the forecast, but often deliver excellent sessions between storm fronts.

Low Surf Season (November - March)

The summer months and early autumn bring the smallest and least consistent surf. Swell heights average 1.6-1.9m with shorter periods (11.3-11.9s). The dominant winds shift to a more westerly component, with onshore winds from W-NW becoming frequent. December is particularly challenging with only 25% ideal wind. While there are still fun, rippable days, especially when a tropical cyclone or unusual swell event occurs, the overall quality is inconsistent. Light wind mornings can offer clean, small waves, but the main game is elsewhere.

February: Slightly Better, But Still Summer

February offers a slight uptick in quality as the swell period stretches to 11.9s and the frequency of offshore winds increases to 34%. The swell window remains locked on WSW and W, delivering consistent, fun-sized waves. However, the wind is still a coin flip—westerly onshore flow dominates when lows track close. The best chance for clean surf comes with a strong high settling over the South Island, funneling ESE breezes. It's a month of hopeful early mornings.