New South Wales will get short relief from the rain, with a second wave of heavy falls expected on Friday and across the weekend, while Victoria is basking in sunshine.

Four people required rescuing from rising floodwaters on Wednesday night as torrential rain continues to beat down on NSW and parts of southeast Queensland.

The Bureau of Meteorology issued another weather warning for parts of NSW on Thursday, and told people to prepare for more flooding.

BoM meteorologists told The New Daily that NSW could expect showers and thunderstorms on Thursday and Friday, but there was potential for heavy rain to increase from late Friday through to Saturday.

The forecasters said rain would likely intensify on the northern coast of NSW and also possibly the southeast coast of Queensland over the weekend, with dangerous surf predicted around the far north NSW coast, as wind gusts pick up speed.

Sawtell, near Coffs Harbour, has been hit hardest by storms with 230mm of rain in the past 24 hours alone, followed by Boambee’s 206mm and 180mm in Smoky Cape.

The BoM issued a flood warning for Wilsons River in Lismore, NSW, which was hit with about 302mm in the past 48 hours.

The following rivers will remain on flood watch throughout the weekend: Orara, Bellinger, Hastings, Wilsons, Nambucca, Macleay, Manning, Brunswick, Richmond, Clarence, Coffs Coast rivers.

Janelle & her son Ben sit in their flooded backyard in Sawtell, south of #CoffsHarbour @ABCNSW @ABCemergency @NSWSES pic.twitter.com/DrXMXs2S90

— Ruby Cornish (@rubycornish) March 15, 2017

NSW SES advised that residents could prepare for potential future flooding by stocking up on essential items such as food, filling sandbags, moving livestock and mobile vans to higher ground.

While there is a high chance of rain on Monday and Tuesday, less than 5mm is forecast.

Flash flooding expected in northern NSW with heavy rainfaill to hit Coffs Harbour, Lismore, Grafton and Port Macquarie #NSWWeather #NSWstorm pic.twitter.com/gLJcUMeKeW

— Naeun Kim (@Naeun_K) March 15, 2017

Meanwhile, Victorians have faced nights with minimum temperatures in the mid 20Cs. Last night saw a minimum of 22C.

The next couple of nights will drop as low as 14C to 16C, but there won’t be relief for long.

Night temperatures are due to rise again to about 20C on Sunday and Monday nights.