About 37 flights have already been cancelled before 8am on Monday morning.

A Sydney Airport spokesman said strong winds have forced the airport to run off one of their three runways.

This has caused some flight delays and cancellations.

Passengers are urged to speak to their airlines to get the latest information on the status of their flights.

The Bureau of Meteorology has forecast winds of up to 45km/h in Sydney.

APPARENT TEMPERATURE PLUNGES IN SYDNEY

The bureau’s weather observations showed the temperature plunged in Sydney overnight.

The temperature dropped to 10.5C at Sydney airport at 4am today — but the apparent temperature was a chilly 0.8C as cold winds blasted the Harbour City. At Mount Boyce it was -1C but felt like -8.3C.

A total of 10.8mm was also recorded in the rain gauge

More to come.