Ferries cancelled, flights affected as Sydney wakes to heavy blanket of fog

Dozens of flights and ferry services have been cancelled in Sydney as heavy fog causes major delays for commuters.

A spokesperson for Sydney Airport warned the fog, which is lifting, may cause some delays.

"Heavy fog is impacting flights across the network, and we advise passengers to check the status of their flight with their airline," the airport said.

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International and domestic flights are affected.

For commuters, transport authorities have told passengers to make alternative travel arrangements or consider catching a bus instead.

After a total cancellation of services earlier this morning, some ferries have resumed.

Ferries east of Sydney Harbour Bridge are now operating, but the F3 Parramatta River and F4 Pyrmont Bay services are still affected.

Some services have also been cancelled between Rydalmere and Circular Quay, and between Sydney Olympic Park and Barangaroo.

Despite the update, passengers have been told to expect longer travel times, to listen for service announcements and to check information boards for any updates.

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There is no impact on flight services out of Sydney Airport.

The morning fog has settled on Sydney Harbour and has stretched into the city's north and west. The fog is so thick this morning, the Sydney Harbour Bridge was barely visible from Milsons Point.

The fog is expected to clear later today, with temperatures in Sydney expected to reach a maximum of 21 degrees.

The Bureau of Meteorology has warned of large and powerful surf conditions in Sydney as winds pick up, making activities such as rock fishing, swimming and surfing a hazard.

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