Australia’s southeast coast is forecast to have a warm and sunny long weekend, but Easter egg hunts in Queensland could be rained out.

As families plan camping trips and getaways over the four-day weekend, police in several states have urged motorists to drive safely, especially where there are wet conditions.

New South Wales weather

Sydney is expected to enjoy a sunny and warm few days, but some locals on the Northern Beaches will miss out on taking a dip.

Collaroy Beach was closed on Wednesday due to seaweed dumped on the shore, according to the Northern Beaches Council.

Seaweed was expected to be between one and two metres high on parts of the beach, which could remain closed for the entire long weekend.

“This is a completely natural occurrence and we understand it can be smelly and unsightly but seaweed is a food source, home and shelter to many amazing sea creatures,” the council said in a statement.

Collaroy Beach may be closed this long weekend due to large amounts of seaweed (1-2 metres in some parts!).

This is a completely natural occurrence and we understand it can be smelly and unsightly but seaweed is a food source, home and shelter to many amazing sea creatures! pic.twitter.com/UOWygzOoFX

— Northern Beaches Council (@beachescouncil) March 28, 2018

“It’s likely much of the seaweed will be removed by the high tides over the next few days but we’re keeping an eye on it and will open the beach as soon as we can.”

Hazardous surf also closed beaches at Byron Bay on Thursday. BOM warned against swimming, rock fishing and boating.

Good Friday is expected to reach a top of 35 degrees in Penrith in the western suburbs, or a slightly cooler 29 degrees in the CBD.

A maximum of 25 degrees is forecast for the city on Saturday, with a slight chance of shower, according to the Bureau of Meteorology (BOM).

Chocolate eggs could melt in the sun on Easter Sunday with a maximum of 30 degrees in the city and 34 in Penrith.

A possible shower will hit on Monday, followed by the chance of a thunderstorm in the afternoon. Temperatures will remain warm with a top of 27 degrees in the city.

Victoria

Melbourne is expected to stay at a mild maximum of 23 degrees over the long weekend.

Partly cloudy, with a slight chance of a light shower in the southeast suburbs on Friday and across the city on Monday, according to BOM. Monday is predicted to be slightly cooler at 21 degrees.

Forest Fire Management Victoria said the weather conditions were perfect for planned burning across most of the state over the coming week.

Queensland

Forecasters are predicting a wet Easter weekend across most of Queensland, with possible heavy showers for Cairns and the Whitsundays due to ex-tropical cyclone Iris heading to the coast.

It’s not clear how much rain will hit and where but residents should remain vigilant and prepare for flash flooding, the BOM said.

“Even a small amount of rain wouldn’t be welcome at this time for Cairns,” a BOM forecaster told AAP on Thursday.

Areas around Cairns copped about one metre of rain over several days and on Monday 100mm fell in one minute.

Meanwhile, the clean up continues in the aftermath of ex-tropical cyclone Nora and other recent rain events.

Brisbane is expected to experience passing showers, with possible sunny breaks between across the weekend. The city is forecast to reach a top of 29 degrees over the weekend.

A hazardous surf warning has been issued for beaches on the southeast coast for Thursday and Friday.

Ex-Tropical #CycloneIris will impact the SEQ coast with hazardous surf conditions from tomorrow. There is still uncertainty about its future track with some models pointing to further significant falls for coastal catchments in north #Qld from Sunday: https://t.co/G9RyQ530L7 pic.twitter.com/RXHf3cN5DW

— Bureau of Meteorology, Queensland (@BOM_Qld) March 28, 2018

Residents in the Sunshine Coast, Gold Coast, Capricornia Coast and on Fraser Island have been warned against swimming, rock fishing and boating.

Surf Life Saving Queensland closed Alexandra Headlands, Buddina, Discovery, Kinds, Main Beach at Stradbroke Island, Maroochydoore, Peregian and Mudjimba beaches.

“There’s likely to be a lot of water movement and large waves, which can often lead to flash rips and strong currents,” lifesaving operations coordinator Jason Argent said.

South Australia

Adelaide is expected to reach a maximum of 23 degrees on Good Friday. The city is expected to be partly cloudy with a slight chance of a light shower in the morning.

Saturday is expected to be sunny and a maximum of 24 degrees, followed by 25 and partly cloudy on Sunday. The maximum temperature will dip to 23 degrees on Monday and remain partly cloudy.

-with AAP