From 9am on Saturday to 9am on Monday, Brisbane received about 70 millimetres, Mount Glorious had an estimated 165mm, while North Stradbroke Island recorded more than 140mm.

In the Gold Coast hinterland near the NSW border, Upper Springbrook copped 695mm during the weekend and Binna Burra was hit with more than 370mm.

The Moreton Bay suburbs of Beerburrum and Mount Mee recorded just over 150mm, while the Sunshine Coast communities of Landsborough and Maleny received 179mm and 258mm respectively.

Footage taken at Dicky Beach on Monday morning showed the king tide swallowing the stretch of sand and cutting off morning walkers.

Adam Davis, whose morning walk was ended by the king tide at Dicky Beach, said the water was the highest he had ever seen.

"There was barely any sand where we were, and most of Currimundi was covered as well," he said.

"We couldn’t get through. My dog tried to make a bolt for it and nearly got washed out."

Boats were washed ashore at Victoria Point, south-east of Brisbane, and a layer of seafoam formed underneath the sand bypass jetty at the Gold Coast.

There was also flash flooding at the Teneriffe Ferry Terminal on Monday and in Albion in Brisbane.

Energex spokesman Danny Donald said it was a frustrating day for those at home without power and crews trying to restore connections.

"In Wynnum, Manly and Cleveland, we have had to take people off the network because the tide is up and inundating our underground network ... we don’t want to re-energise those areas until the tide goes down," he said.

"All day we have had 12,000-18,000 customers off the network. Just as our crews get something back up and running, five minutes later another tree falls on the lines or the winds come back."

Senior meteorologist Laura Boekel said flooding was possible along coastal suburbs and in low-lying areas near the Brisbane River.

"This weather is being generated by a coastal trough off the south-east coast and a slow-moving upper low over the south-east," she said.

"The focus of heavy falls … is likely to be south of Fraser Island, contracting to the Gold Coast by this afternoon and easing further from Tuesday.

"Strong-to-gale-force winds will result in dangerous surf conditions along the south-east coast. In combination with increasing tides, there is a risk of coastal erosion until Tuesday."

Ms Boekel said the cooler temperatures would continue on Monday before the mercury would start warming up on Tuesday and reach 30 degrees at the weekend - two-to-seven degrees above average.