Spokeswoman Kenosi Machepa said heavy rainfalls were expected in places over the northern parts of KwaZulu-Natal, the eastern Highveld and escarpment of Mpumalanga as well as the central parts of Limpopo on Friday.

"Temperatures will still be cool to warm over most parts of the country, but otherwise cold over Gauteng and Mpumalanga."

Machepa said the wet weather was expected to clear completely by Saturday morning in the eastern parts of the country and temperatures were expected to start warming up from Saturday.

"A weak cold front is approaching from the west and will result in isolated showers and rain in the south western parts of the country by Sunday."

Two cars were swept off a small flooded bridge on Valley Drive near Waterfall in KwaZulu-Natal on Friday.

ER24 spokesman Derrick Banks said the drivers of the two vehicles were found safely on the side of the road while their cars were in the river.

"They were unharmed and just wet and cold. They would go and see their own doctor if they needed further medical assistance."

Banks advised motorists not to drive through flooded areas.

"If you see a flooded road ahead, turn around and find an alternative route to get to your destination."