Rainfall mainly in the east this weekend and a severe thunderstorm warning

By Staff Writer
Published: 12 September 2025 [updated 13 September]

This forecast is for: Sat 13 September 2025
The maps cover: Sat 13 Sep – Mon 15 Sep

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Partly cloudy and cool to warm but hot in places, with isolated showers and thundershowers but scattered in the south on Saturday.

From Sunday it should be fine in the western and central interior, otherwise partly cloudy and cool to warm but hot in places, with isolated to scattered showers and thundershowers in the east.

Warnings from the SA Weather Service for Saturday:

A. level 2 warning for severe thunderstorms over KwaZulu-Natal (except the extreme northern parts) resulting in localised damage to infrastructure and settlements, localised flooding of susceptible roads and bridges as well as minor motor vehicle accidents due to slippery roads and poor visibility.

Extremely high fire danger conditions are expected over parts of the Lowveld of Limpopo and Mpumalanga, the western parts of the North West and Free State as well as the central and eastern parts of the Northern Cape.

Warnings from the SA Weather Service for Sunday:

A. level 2 warning for severe thunderstorms over parts of KwaZulu-Natal, as per the map below.

Regional forecasts from the SA Weather Service for Saturday:

GAUTENG
Fine and warm, becoming partly cloudy with isolated afternoon showers and thundershowers in the south.
The expected UVB sunburn index: Very High

MPUMALANGA
Fine over the northern Lowveld, otherwise partly cloudy and warm to hot with isolated afternoon showers and thundershowers in the southern Highveld.

LIMPOPO
Fine and warm to hot becoming partly cloudy in the south in the afternoon.

NORTH WEST
Partly cloudy, windy and warm to hot with isolated showers and thundershowers in the west.

THE FREE STATE
Partly cloudy, windy and cool to warm with isolated showers and thundershowers but scattered in the extreme south-west.

THE NORTHERN CAPE
Fine in the west with morning fog along the coast and adjacent interior, otherwise partly cloudy, windy and warm to hot with isolated to scattered showers and thundershowers in the east. It will be cool to cold in places in the extreme south-west. The wind along the coast will be moderate to fresh southerly to south-easterly.

THE WESTERN CAPE
Morning fog in the north-western parts where it will be fine in the afternoon, otherwsie cloudy to partly cloudy with isolated showers and thundershowers along the south coast and north-eastern interior. It will be cold in places om the southern parts, otherwise cool. The wind along the coast will be light to moderate southerly to south-easterly, but fresh to strong along the west and south-west coast.
The expected UVB sunburn index: Very High

THE WESTERN HALF OF THE EASTERN CAPE
Cloudy and cool with scattered showers and thundershowers, but isolated in the north. The wind along the coast will be moderate south-easterly.

THE EASTERN HALF OF THE EASTERN CAPE
Cloudy and cool with scattered showers and thundershowers, but widespread in the east. The wind along the coast will be moderate southerly, but south-easterly from the evening.

KWAZULU-NATAL
Morning fog patches in places over the interior, otherwise partly to cloudy and warm but cool in the south. Isolated showers and thundershowers are expected in the extreme north, otherwise scattered. The wind along the coast will be light to moderate northerly to north-easterly, becoming light to moderate southerly to south-westerly from the afternoon.
The expected UVB sunburn index: Low

Travellers forecasts from the SA Weather Service for Saturday:

PRETORIA
Fine becoming partly cloudy.
Minimum/Maximum: 10/27°C
The expected UVB Sunburn Index: Very High

JOHANNESBURG
Fine becoming partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 13/27°C

VEREENIGING
Fine becoming partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 19/26°C

MBOMBELA
Fine becoming partly cloudy.
Minimum/Maximum: 15/31°C

POLOKWANE
Fine.
Minimum/Maximum: 14/28°C

MAHIKENG
Partly cloudy and windy.
Minimum/Maximum: 15/28°C

VRYBURG
Partly cloudy and windy with isolated showers and thundershowers.
Minimum/Maximum: 16/29°C

BLOEMFONTEIN
Partly cloudy and windy with isolated showers and thundershowers.
Minimum/Maximum: 14/25°C

KIMBERLEY
Partly cloudy and windy with isolated showers and thundershowers.
Minimum/Maximum: 15/28°C

UPINGTON
Partly cloudy and windy with isolated showers and thundershowers.
Minimum/Maximum: 16/30°C

CAPE TOWN
Partly cloudy, becoming fine in the evening.
Wind: Fresh to strong to south-easterly.
Minimum/Maximum: 13/21°C
The expected UVB Sunburn Index: Very High

GEORGE
Cloudy with scattered showers and rain.
Wind: Light to moderate southerly to south-easterly.
Minimum/Maximum: 11/17°C

GQEBERHA
Cloudy with scattered showers and rain.
Wind: Moderate south-easterly.
Minimum/Maximum: 16/19°C

EAST LONDON
Cloudy with widespread of showers and thundershowers.
Wind: Light and variable at first, otherwise moderate southerly, but south-easterly from the evening.
Minimum/Maximum: 17/19°C

DURBAN
Partly cloudy with scattered showers and thundershowers from the afternoon.
Wind: Light to moderate northerly to north-easterly, becoming light to moderate southerly to south-westerly in the late hours of the morning.
Minimum/Maximum: 18/24°C
The expected UVB Sunburn Index: Low

RICHARDS BAY
Partly cloudy with scattered evening showers and thundershowers.
Wind: Light to moderate northerly to north-easterly, becoming light to moderate southerly to south-westerly in the evening.
Minimum/Maximum: 17/29°C

PIETERMARITZBURG
Cloudy with scattered showers and thundershowers from the afternoon.
Minimum/Maximum: 13/24°C

This forecast is usually updated a few times per day.

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