SATURDAY WEATHER: Thunderstorms and a warning for damaging wind & waves with a cut-off low expected from Sunday

By Staff Writer
Published: 11 September 2026

This forecast is for: Sat 12 September 2026
The maps cover: Sat 12 Sep – Mon 14 Sep


From Saturday it should be fine in places but partly cloudy and cool to warm with isolated to scattered showers and thundershowers in the south and west.

A cut-off low pressure system developing west of the country is expected to affect the Western Cape and Northern Cape from Sunday into Monday, bringing a significant drop in temperatures over high-lying areas as well as intermittent showers and thundershowers (heavy at times) and very rough seas reaching between 4m and 4.5m. Large amounts of small hail and lightning and also possible.

SEE ALSO: More snow on the radar for Lesotho and some peaks in South Africa from early next week.

Warnings from the SA Weather Service:

A. level 2 warning for damaging wind and waves leading to difficulty in navigation at sea and small vessels at risk of capsizing between Table Bay and Cape Agulhas on Saturday and Sunday.

Extremely high fire danger conditions are expected in places in the central and eastern parts of Northern Cape.

Regional forecasts from the SA Weather Service:

GAUTENG
Fine and cool to warm.

MPUMALANGA
Morning fog and drizzle over the central and eastern parts, otherwise fine to partly cloudy and cool to warm.

LIMPOPO
Morning fog and drizzle in the south-eastern parts where it will be cloudy to partly cloudy, otherwise fine and warm.

NORTH-WEST
Fine and warm, becoming partly cloudy towards evening.

THE FREE STATE
Fine and warm, becoming partly cloudy in the west towards evening.

THE NORTHERN CAPE
Fine in the northeast, otherwise partly cloudy and warm to hot with early evening isolated showers and thundershowers in the west and southern parts. The wind along the coast will be moderate to fresh south-easterly, reaching strong at times. It will become light and variable in the evening.

THE WESTERN CAPE
Cloudy and cold to cool with isolated showers and rain, but scattered over the Overberg and western parts of the Garden Route Districts. Isolated showers and thundershowers are also expected over the north-eastern parts from the afternoon. It will be warm in the west. The wind along the coast will be light to moderate easterly along the south coast, reaching fresh at times, otherwise fresh to strong southerly to south-easterly, reaching gale along the south-west coast

THE WESTERN HALF OF THE EASTERN CAPE
Partly cloudy and warm in the north, otherwise cloudy and cool with isolated showers and thundershowers, but scattered showers and rain along the coast. The wind along the coast will be moderate north-easterly, becoming south-easterly in the afternoon.

THE EASTERN HALF OF THE EASTERN CAPE
Partly cloudy north of the escarpment, otherwise cloudy and cool to warm with isolated showers and thundershowers. Isolated showers and rain can be expected along the coast, but scattered in the south. The wind along the coast will be moderate north-easterly.

KWAZULU-NATAL
Morning fog over the central and western interior, otherwise partly cloudy to cloudy and cool to warm with isolated showers and rain in places in the south. The wind along the coast will be light to moderate south-westerly north of Richards Bay, otherwise northerly to north-easterly, spreading to Kosi Bay by midday and reaching fresh in the extreme north in the afternoon.

Travellers forecasts from the SA Weather Service:

PRETORIA
Fine.
Minimum/Maximum: 12/27°C

JOHANNESBURG
Fine.
Minimum/Maximum: 11/25°C

VEREENIGING
Fine.
Minimum/Maximum: 09/26°C

MBOMBELA
Cloudy with morning fog patches, otherwise partly cloudy.
Minimum/Maximum: 15/26°C

POLOKWANE
Fine.
Minimum/Maximum: 11/27°C

MAHIKENG
Fine.
Minimum/Maximum: 09/26°C

VRYBURG
Fine.
Minimum/Maximum: 09/29°C

BLOEMFONTEIN
Fine.
Minimum/Maximum: 07/28°C

KIMBERLEY
Fine.
Minimum/Maximum: 12/29°C

UPINGTON
Fine.
Minimum/Maximum: 16/33°C

CAPE TOWN
Cloudy with isolated showers and rain in the morning.
Wind: Fresh to strong southerly to south-easterly.
Minimum/Maximum: 17/20°C

GEORGE
Cloudy with isolated showers and rain.
Wind: Light to moderate easterly.
Minimum/Maximum: 14/17°C

GQEBERHA
Cloudy with scattered showers and rain. Isolated early morning thunderstorms are possible.
Wind: Moderate north-easterly, becoming south-easterly in the afternoon.
Minimum/Maximum: 16/19°C

KuGOMPO CITY
Cloudy with rain and showers likely.
Wind: Moderate north-easterly.
Minimum/Maximum: 16/22°C

DURBAN
Partly cloudy to cloudy with isolated showers and rain.
Wind: Light and variable, becoming light to moderate north-easterly from late morning.
Minimum/Maximum: 19/24°C

RICHARDS BAY
Partly cloudy to cloudy.
Wind: Light south-westerly, becoming light to moderate north-easterly from late morning.
Minimum/Maximum: 18/28°C

PIETERMARITZBURG
Morning fog, otherwise partly cloudy to cloudy with isolated showers and rain.
Minimum/Maximum: 14/27°C

This forecast is usually updated a few times per day.



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