In short
BoM and Seabreeze serve different products — differences are normal.
They can be — and that is often expected.
The Bureau publishes official public forecasts. Seabreeze emphasises wind and coastal conditions for watersports, using model guidance and presentation choices aimed at that audience. Different products, different emphasis; neither is “the only truth” for every beach hour.
It's always interesting when someone writes in that a forecast is "wrong" or "different". a) it's not happened yet, and b) like interest rates and property prices, the weather will do it's own thing, regardless of what us humans predict.
More context: why forecasts feel wrong , vs other sites .
