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Morning fog in most provinces on Monday and thunderstorms in the Eastern Cape

By Staff Writer
Published: 17 August 2025

This forecast is for: Mon 18 August 2025
The maps cover: Mon 18 Aug – Wed 20 Aug


A newer forecast is available by clicking here.

From Tuesday it should be fine over the western and central interior, otherwise partly cloudy and cool to warm with isolated showers and rain in places.

Warnings from the SA Weather Service for Monday:

Extremely high fire danger conditions are expected in places over the Dr Beyers Naude local municipality of the Eastern Cape, and the Kareeberg local municipality of the Northern Cape.

Regional forecasts from the SA Weather Service for Monday:

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

MPUMALANGA
Morning fog patches over the Highveld, otherwise partly cloudy and cool with drizzle along the escarpment. It will be warm in the east.

LIMPOPO
Morning fog patches in places, otherwise partly cloudy and cool to warm with isolated showers in the east.

NORTH WEST
Partly cloudy, windy and cool to warm. It will be fine in the north-west.

THE FREE STATE
Partly cloudy, windy and cool.

THE NORTHERN CAPE
Partly cloudy with morning fog along the coast, otherwise fine, windy and cool to warm. It will be cold in the extreme south. The wind along the coast will be light to moderate south to south-easterly.

THE WESTERN CAPE
Morning fog in places in the south and south-west, otherwise fine and cool to warm. It will be partly cloudy along the west, and south-west coast. The wind along the coast will be moderate to fresh north-westerly, but south-westerly along the south coast.
The expected UVB sunburn index: Moderate

THE WESTERN HALF OF THE EASTERN CAPE
Morning fog patches in places, otherwise fine and cool to warm. The wind along the coast will be light to moderate westerly to south-westerly.

THE EASTERN HALF OF THE EASTERN CAPE
Morning fog in places south of the escarpment, otherwise partly cloudy and cool to warm, with isolated showers and thundershowers in the east. The wind along the coast will be light to moderate southerly to south-easterly.

KWAZULU-NATAL
Morning fog in places over the interior, otherwise partly cloudy and cool to warm with isolated showers and rain in the extreme north-east. The wind along the coast will be moderate to fresh northerly to north-easterly, reaching strong in the south from the afternoon.
The expected UVB sunburn index: Very High

Travellers forecasts from the SA Weather Service for Monday:

PRETORIA
Partly cloudy.
Minimum/Maximum: 12/22°C
The expected UVB Sunburn Index: High

JOHANNESBURG
Partly cloudy.
Minimum/Maximum: 10/21°C

VEREENIGING
Partly cloudy.
Minimum/Maximum: 8/20°C

MBOMBELA
Partly cloudy with morning drizzle.
Minimum/Maximum: 11/23°C

POLOKWANE
Partly cloudy.
Minimum/Maximum: 11/22°C

MAHIKENG
Fine and windy.
Minimum/Maximum: 10/24°C

VRYBURG
Partly cloudy and windy
Minimum/Maximum: 7/25°C

BLOEMFONTEIN
Partly cloudy and windy.
Minimum/Maximum: 8/23°C

KIMBERLEY
Partly cloudy and windy.
Minimum/Maximum: 8/25°C

UPINGTON
Fine.
Minimum/Maximum: 4/28°C

CAPE TOWN
Morning fog, otherwise partly cloudy.
Wind: Moderate to fresh north-westerly.
Minimum/Maximum: 11/20°C
The expected UVB Sunburn Index: Moderate

GEORGE
Fine.
Wind: Moderate to fresh south-westerly.
Minimum/Maximum: 8/21°C

GQEBERHA
Morning fog, otherwise fine.
Wind: Light to moderate westerly to south-westerly.
Minimum/Maximum: 12/24°C

EAST LONDON
Partly cloudy.
Wind: Light to moderate southerly to south-easterly.
Minimum/Maximum: 13/25°C

DURBAN
Partly cloudy.
Wind: Moderate to fresh northerly to north-easterly, reaching strong in the afternoon.
Minimum/Maximum: 17/25°C
The expected UVB Sunburn Index: Very High

RICHARDS BAY
Partly cloudy.
Wind: Moderate to fresh northerly to north-easterly.
Minimum/Maximum: 18/26°C

PIETERMARITZBURG
Morning fog, otherwise partly cloudy.
Minimum/Maximum: 11/27°C

This forecast is usually updated a few times per day.



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