Rain, thunderstorms, a damaging wind warning and light snow possible on Sunday

By Staff Writer
Published: 20 September 2025 [updated 21 September]

This forecast is for: Sun 21 September 2025
The maps cover: Sun 21 Sep – Tue 23 Sep

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From Sunday it should be partly cloudy and warm with isolated showers and thundershowers over many parts of the country.

There is also a chance of a light dusting of snow on some of the Western Cape peaks on Sunday night but nothing low-level is expected.

From Monday it should be partly cloudy and warm to cool with isolated showers and thundershowers over the central and eastern parts of the country, but scattered over the south-west.

ALSO READ: More snowfall possible for Lesotho and South Africa this week.

Warnings from the SA Weather Service for Sunday:

A. level 1 warning for damaging interior winds, as per the map above. Due to the passage of the cold front, strong surface winds in excess of 40-50km/h, gusting up to 70-80km/h can be expected over the central and southern parts of the Northern Cape.

Extremely high fire danger conditions are expected in places over eastern parts of the Northern Cape, the south-western parts of North West and the north-western parts of Free State.

Warnings from the SA Weather Service for Monday:

A. level 2 warning for damaging coastal winds and waves along the the Eastern Cape coast, as per the map below.

B. level 2 warning for damaging interior winds in parts of the Eastern Cape, as per the map below.

Regional forecasts from the SA Weather Service for Sunday:

GAUTENG
Partly cloudy and warm.
The expected UVB sunburn index: Very High

MPUMALANGA
Partly cloudy and cool to warm with isolated showers and thundershowers over the central and southern parts by the afternoon.

LIMPOPO
Partly cloudy in the extreme south, otherwise fine and warm.

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

THE FREE STATE
Partly cloudy, windy and warm to hot, with isolated showers and thundershowers but scattered over the Lesotho border, the southern and eastern parts.

THE NORTHERN CAPE
Cloudy to partly cloudy, windy, and warm to hot with isolated showers and thundershowers in the east but scattered in the extreme southeast. Morning fog expected over the western interior. The wind along the coast will be light and variable, becoming moderate south-easterly from afternoon.

THE WESTERN CAPE
Cloudy and warm but cool along coast with isolated to scattered light showers and rain in the evening over the south-western parts and north-eastern interior in the evening. The wind along the coast will be moderate to fresh southerly to south-easterly becoming south-westerly from the afternoon along the south-western coast, but moderate to fresh easterly to south-easterly along the south coast.
The expected UVB sunburn index: Very High

THE WESTERN HALF OF THE EASTERN CAPE
Partly cloudy and cool to warm, becoming cloudy with isolated afternoon showers and thundershowers but scattered in the north. The wind along the coast will be light and variable, becoming fresh to strong north-easterly.

THE EASTERN HALF OF THE EASTERN CAPE
Partly cloudy and cool to warm, becoming cloudy with isolated showers and thundershowers, but scattered north of the escarpment. The wind along the coast will be moderate south-westerly, becoming moderate to fresh north-easterly by the evening.

KWAZULU-NATAL
Morning fog over the northern interior, otherwise cloudy to partly cloudy and cool to warm with isolated scattered showers and thundershowers but isolated in the north. The wind along the coast will be moderate to fresh northerly to north-easterly reaching strong in places becoming moderate to fresh southerly to south-westerly from the south by the morning but moderate variable south of
Richards Bay from mid-day.
The expected UVB sunburn index: Low

Travellers forecasts from the SA Weather Service for Sunday:

PRETORIA
Partly cloudy.
Minimum/Maximum: 14/29°C
The expected UVB Sunburn Index: Very High

JOHANNESBURG
Partly cloudy.
Minimum/Maximum: 13/27°C

VEREENIGING
Partly cloudy.
Minimum/Maximum: 14/27°C

MBOMBELA
Partly cloudy with isolated showers.
Minimum/Maximum: 15/27°C

POLOKWANE
Fine.
Minimum/Maximum: 13/28°C

MAHIKENG
Fine and windy.
Minimum/Maximum: 16/30°C

VRYBURG
Partly cloudy and windy.
Minimum/Maximum: 14/31°C

BLOEMFONTEIN
Partly cloudy and windy, with isolated showers and thundershowers.
Minimum/Maximum: 14/31°C

KIMBERLEY
Partly cloudy and windy, with isolated showers and thundershowers.
Minimum/Maximum: 18/32°C

UPINGTON
Partly cloudy and windy, with isolated showers and thundershowers.
Minimum/Maximum: 20/36°C

CAPE TOWN
Fine becoming cloudy with evening light isolated to scattered showers and rain.
Wind: Light to moderate southerly to south-easterly becoming north-westerly from the afternoon.
Minimum/Maximum: 13/21°C
The expected UVB Sunburn Index: Very High

GEORGE
Fine, becoming cloudy from the afternoon.
Wind: Light easterly becoming moderate to fresh easterly to south-easterly from the afternoon.
Minimum/Maximum: 9/21°C

GQEBERHA
Partly cloudy with evening showers and thundershowers.
Wind: Light and variable, becoming fresh to strong north-easterly.
Minimum/Maximum: 13/21°C

EAST LONDON
Partly cloudy with showers and thundershowers.
Wind: Moderate south-westerly, becoming moderate to fresh north-easterly by the evening.
Minimum/Maximum: 15/22°C

DURBAN
Partly cloudy with isolated showers and rain.
Wind: Moderate to fresh northerly to north-easterly reaching strong in places becoming moderate to fresh southerly to south-westerly by the morning but moderate variable from mid-day.
Minimum/Maximum: 18/25°C
The expected UVB Sunburn Index: Low

RICHARDS BAY
Partly cloudy with scattered showers and rain.
Wind: Moderate to fresh northerly to north-easterly reaching strong at times but moderate variable south from mid-day.
Minimum/Maximum: 17/31°C

PIETERMARITZBURG
Morning fog patches, otherwise partly cloudy with isolated showers and rain.
Minimum/Maximum: 12/29°C

This forecast is usually updated a few times per day.

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