Crocodile sightings in floodwaters have been claimed, after heavy rainfall lashed a region on cyclone watch, with no relief in sight

North Queensland has been hit by torrential rain for days causing road closures and multiple rescues, with three tropical lows looming off the coast.

The low pressure system off Cairns, has brought a deluge to the north tropical coast, with seven-day rainfall totals of up to 700mm in some areas.

Another low in the Gulf of Carpentaria was set to weaken but a system in the Coral Sea near Vanuatu could develop into a cyclone from Sunday.

The low off Cairns has been the focus for Queensland authorities with a wet weekend ahead.