Dee Why Point • Surf Spot Statistics

Best Surf Season (April - August)

The Tasman Sea settles into its autumn and winter groove as the subtropical high slides south and the westerly wind belt tightens across the New South Wales coast. Swell heights stay consistently in the 5-6ft (1.5-1.8m) range while the average wave period lengthens to 9.2-9.7s, bringing far more organized and powerful lines into Dee Why Point. Most importantly, the ideal offshore wind percentage jumps to 35-46% during these months, with SW, WSW, W and WNW flow grooming the surface. Although straight S and SSE swells become common, the more east this energy sits, the better; whenever ENE, ESE or E swell rides underneath a westerly offshore breeze, Dee Why Point produces long, rippable walls and clean, punchy peaks.

Fair Surf Season (March, September - October)

These shoulder months offer a genuine mixed bag. March begins with the fading summer trade-swell regime, but the average period climbs to 9.2s and the first meaningful westerly wind windows appear, making it the early tipping point out of summer. September and October hold onto winter's offshore tendencies while slowly reintroducing more NE/ENE/E/ESE swell into the mix. With ideal wind sitting between 26% and 36%, there are plenty of morning scoring sessions before the spring sea breeze builds. The key on fair-season days is to stay flexible: pick the dawn window, watch the wind direction closely, and target the more easterly swell events.

Low Surf Season (November - February)

Summer is the most limited stretch at Dee Why Point. Average wave periods drop to 8.3-8.8s, the ideal wind percentage collapses to 14-20%, and the NE/ENE trade-wind flow becomes the dominant regime. The NE through ESE swell window is actually abundant during these months, but much of it is local windswell arriving under the same onshore wind that created it. Add in afternoon sea breezes and the result is often bumpy, soft and sectiony surf. Dawn patrol remains the only consistent bet, although an occasional tropical cyclone or Coral Sea low can briefly spin up bigger, more powerful E/NE groundswell in the middle of summer.