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.

January: Summer Lull and Westerly Winds

January settles into a classic summer lull along the West Coast. The average 1.7m swell, while rideable, is dominated by shorter-period WSW groundswell, with a fair amount of W windswell mixing in. The wind pattern is the main issue: persistent westerly onshore winds (W and WSW blow over 32% of the time) ruin the wave face. Only occasional early morning offshore ESE breezes provide a clean window, but they're light and short-lived. Expect choppy, average conditions most days, with the rare gem when a southward-moving high aligns.