Windang Island - surf spot statistics

Best Surf Season (May - September)

Austral autumn and winter deliver the most consistent and high-quality surf to Windang Island. As the South Pacific storm track intensifies, long-period groundswells from the SE to SSE quadrant become dominant, often generated by powerful mid-latitude lows south of Australia. The average wave period climbs to 9.5-9.7 seconds, providing punchy, rippable waves in the 1-2.5m range. Crucially, the percentage of ideal offshore winds (from the W to NW) peaks at 35-38%, ensuring clean, groomed faces. This is the window for the island's best waves: powerful, lined-up sets with minimal onshore contamination.

Fair Surf Season (March - April & October)

The transition months offer a mixed bag but can produce phenomenal sessions when conditions align. March and April see a lingering summer swell mix with early winter groundswells, while October bridges the gap back towards summer. The average swell height remains solid at 1.6-1.7m, but the period drops slightly to 8.7-9.4 seconds, meaning more chop and less power. Ideal wind frequencies range from 25-33%, so you'll need to pick your windows. When a westerly change coincides with a solid SSE swell, the result can be glassy, hollow waves peeling off the island.

Low Surf Season (November - February)

Summer brings a significant downturn in surf quality at Windang Island. The dominant swell shifts east and northeast, with shorter periods (8.3-8.8s) and a higher proportion of windswell. The average height stays around 1.5-1.6m, but the consistency of clean, offshore conditions plummets to just 19-23% of the time. Onshore seabreezes from the E to SE are the norm, creating bumpy, blown-out surf. While occasional groundswell pulses from a distant cyclone or Tasman low can light up the island, these events are rare. Expect small, grovelly conditions most days, best reserved for beginners or the easily amused.

September: Spring Transition – Quality Remains High

September marks the beginning of spring, but the surf quality at Windang Island remains surprisingly good. The average swell height holds at 1.6m, with a period of 9.0 seconds. The swell direction is still dominated by SSE (17.3%) and S (16.1%), although there is a notable increase in NE (10.0%) and ENE (9.9%) swells as the tropical influence returns. The wind data shows ideal conditions 35% of the time, similar to winter. The wind rose reveals a shift: W (9.9%) and WNW (6.4%) winds are still frequent, but there is a growing presence of NNE and NE breezes (especially at 10-20kph). These can create onshore conditions, but the offshore window remains wide. September is a month of two halves: early spring still delivers winter-like power and offshore winds, while later in the month the seabreeze starts to become a factor. For the savvy surfer, this month offers some of the best waves of the year before the summer lull sets in.