looking for something else on Google maps I came across this. I wonder how it would go in a Southerly? I guess if the land affected the flow you could aways run the other way at the mouth for a nice 500m

That's a far canal

Very high banks and hills close by.

It only takes 1 sand dune on the lee side of the run to really upset the clean air. This is down at Henty and as you go past the big dune sometimes you almost get back winded. That's with clean wind coming from R of pic

That's because with onshore winds hitting an escarpment, the wind is forced up over the escarpment, creating a rotating "pillow" of wind that sometimes creates a backdraft or calm spot at the shore.

A similar thing can happen when an offshore wind blows over a cliff, except that the wind "pillow" rotates the opposite way, creating a small area of light onshore wind at the base of the cliff.