Ex-cyclone brings swells to southeast Qld

Strong winds and heavy swells brought on by ex-tropical Cyclone Ola are still being felt in Queensland's southeast.

The Bureau of Meteorology says Ola was downgraded to a tropical low overnight and is sitting halfway between New Zealand and New Caledonia on Wednesday.

"It's a long way off our coast although it's still affecting southeast Queensland," spokesman Jess Carey told AAP.

A strong wind warning is in place for the Fraser Island coast, as well as waters off the Sunshine and Gold coasts.

An earlier warning for Hervey and Moreton bays and the Capricornia coast has been cancelled.

The low is also generating swells of more than three metres between Fraser Island and the NSW border.

"There are some big high tides as well," Mr Carey said, adding that surfers, boaties and fishers should exercise caution.

Four cyclones were detected in the eastern region during the 2013-14 wet season, but none has formed off Queensland so far this year.

The Australian tropical cyclone season runs from November 1 to April 30.