I always look at the Seabreeze site before going racing on the harbour. There are two sites - Sydney Harbour and Fort Denison. Where is the location of the graph for Sydney Harbour from?
I'm pretty sure that the 'Sydney Harbour' wind data is from the Western Channel Marker which is roughly halfway between Fort Denison and North Head.
The W Channel Pile Marker (also known as the Wedding Cake) is about 0.5 nautical miles NNE of the end of Bradleys Head. Wind readings there are a good indication of the breeze between Bradleys Head and Watsons Bay which is often different to the main harbour area of Point Piper, Fort Denison and Neutral Bay.
