The Bureau of Meteorology has issued a severe thunderstorm warning for large hail, damaging wind and possible flash flooding in parts of the state's south-east on Monday. 
Areas within the warning zone include Warwick, Toowoomba, Dalby, Gympie, Kingaroy, Stanthorpe, Goondiwindi and Roma. 
The Bureau said the storms would be patchy and while one suburb may get rain, the next suburb over may not get a drop.
There have already been reports of small hail in some areas and the storms are expected to last into the evening.
Bureau meteorologist Michael Knepp said these conditions were expected to last through to Australia Day.
"It is still going to be unsettled, with a chance of showers and slight chance of thunderstorms, but that's more likely for the western areas," Mr Knepp said.
"For the next day and a bit we will still have deceptively powerful surf along the coast, but those conditions should be easing over the next 24 to 26 hours."
Australia Day surf conditions will still be rough but easing throughout the day due to the Easterly swell.
Surf Life Saving Queensland (SLSQ) saved 100 beach goers over the weekend and were urging people to play it safe for Australia Day.
SLSQ coastal safety officer Chantel Fife said Australia Day was traditionally one of the busiest days for lifesavers and lifeguards.
"More than anything, we're asking beachgoers to think about their personal safety and swim only between the red and yellow flags, which will be patrolled by lifesavers and lifeguards throughout the day," Mrs Fife said.
"The decision to close a beach is one that's made in the interests of public safety and, if that's the case, we really urge members of the public to respect that decision and steer clear of the water."
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