On Wednesday and Thursday, the mercury will dip to below-zero minimum temperatures for Johannesburg (-2°C), with Pretoria falling to 0°C on Thursday.
The cold front is expected to take effect late Monday afternoon.
The powerful gale-force winds were causing severe damage across the Garden Route in the Western Cape.
Gale to strong gale force winds, high seas and flooding can be expected, the South African Weather Service has said.
Law enforcement has advised motorists to be extra careful on wet roads.
In Gauteng, temperatures are expected to drop dramatically overnight on Friday.

Weather WATCH: Trucks blown over as cold front hits SA

Heavy rain is expected in several parts of the country as a severe cold front moves across the country.

Weather Your full weather report: Cold front to hit Gauteng on Saturday

The cold front is expected to hit the province starting Saturday.

Weather Get ready for an ‘intense cold front’ as widespread snow is forecast

A big cold front is looming out in the Atlantic and will bring freezing temperatures to much of the country this weekend.

Weather WC beach goers and smaller vessels at sea warned of higher and lower than normal tides

NSRI said high seas, combined with a Spring tide and the cold front, are expected to reach the Western Cape on Saturday.

Weather In pictures: Oudtshoorn battered by damaging winds

Winds of up to 85km/h had been predicted in the area by the Weather Service.

Weather Watch: Safety warnings as gale force winds lash the Cape

Warning of possible damage to infrastructure as powerful winds and high seas make their presence felt.

Weather Friday’s dark clouds over Gauteng won’t ruin your weekend

The weather in Gauteng this weekend will be a little cold. It will be partly cloudy in some parts, but most areas will have clear skies and sunshine.

Weather Watch: Icy rain predicted for Gauteng as video shows car sliding on frozen road

Freezing conditions on the highveld see icy rain making road driving potentially dangerous.

Weather Rainy, cold Youth Day predicted for eastern SA, including Gauteng

Heavy flooding is possible along the KZN north coast as a cut-off low system passes over the country

Weather WATCH: Mpumalanga temperatures hit -14°C, leaving resident’s pool frozen

According to Belfast resident, her family recorded a minimum of -14°C on Saturday morning.

Weather PICS: Snowy landscapes and icy weather across SA

A strong cold front has brought snow to the mountains of South Africa.

Weather Cold weather arrives in Gauteng as the Western Cape is battered by snow and rain

Prepare for a cold weekend as a big cold front arrives on the highveld.

Weather Cape warned to brace for gale force winds from Tuesday evening

Significant rainfall is also expected from Wednesday, and fairly cold temperatures.

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