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.

January: Summer Lull & Onshore Blues

January is the heart of the Australian summer, and Windang Island feels the brunt of the season's typical trade wind regime. The average swell height sits at 1.6m, but the period is a lackluster 8.5 seconds – dominated by local windswell rather than powerful groundswell. The swell direction is spread across the ENE to SSE spectrum, with the strongest contributions from ENE (18.2%) and SSE (15.1%). Unfortunately, these are the same directions that produce onshore winds at the island. The wind data confirms this: only 19% of the time do we see ideal offshore flow (W to NNW). The dominant winds are from the NNE and S, both of which create cross-to-onshore conditions. Expect average surf at best – small, fun-sized waves for groveling, but often choppy and messy. Look for early mornings before the seabreeze kicks in, or a rare westerly change associated with a passing trough.