SeaBreeze - Wind and wave direction with pretty coloured graphs
Manly Hydraulics Laboratory - Swell and Temperature information:
Bureau of Meteorology - Weather prediction
CSIRO Ocean Currents
Buoy Weather - Global Marine Forecast, with custom local forecasts.
SwellNet - wind, swell and wave height.
Magic Seaweed - local wave, swell and weather.
Local Weather - Local Weather data provided by dedicated private operators, not the Bureau of Meteorology.
TriggerBros - (Victoria) local web cams showing Bass straight (back beaches) PPB & Westernport + local surf swell conditions.
Australian Tide Times - Tide Times for local areas.