Yeah, yeah, yeah, I know they all get the same info but have a look around it's a nice gui to use.
http://www.willyweather.com.au/nsw/sydney/botany-bay.html
I have a warm weather willy, doesn't like the cold.
And while I remember, saw a willywilly in the Bay a couple of trips ago, I'm sure it was started/created by a jet taking off.
It buzzed us for a couple of minutes and was quite energetic, you could hear it ripping the water up.
Didn't think to grab the camera.