Blow me down
The highest recently recorded wind speed from the northeast is 76 km/h at Sydney Airport on 4/6/2016. An extremely strong sea breeze can push over 100km inland. Sailors’ observations suggests the nor-easter seabreeze off Sydney can extend up to 60km out to sea.
Most seabreezes slow down during the evening and stop before midnight,
When a seabreeze first begins it blows directly from sea towards land, however due to the Coriolis Force – basically the spinning of the Earth – the wind moves counter-clockwise as it strengthens, so in Sydney it’s a nor-easter (for the same reason Perth’s ‘Fremantle Doctor’ sea breeze is a sou-wester).
Several days of strong north-east winds can drive blue bottles onto NSW beaches. But, because their floats project either to the left or to the right; affecting which way they will “sail” in the wind, not all bluebottles in a colony will be pushed ashore.
Persistent north-east can also lead to upwellings of very cold water on Sydney’s beaches as the warmer surface water is pushed aside.
Sea breezes are generally stronger during late spring and early summer when the difference between land and sea temperature is at its greatest.