Warriewood nestles below tall cliffs and is properly sheltered from the strong S winds that often hit Sydney on a regular basis. All the open beaches can be blown to shreds but Warriewood will still be rideable, especially at the righthand point, but this means crowds can reach critical mass. Small to moderate E,SE and S swells will line up along the less-than-perfect rock line and any wind from SSE to NW should be clean enough. There's often a good left into the channel as well.
Another steep walk up and down, but it doesn't deter many.