WEDNESDAY WEATHER: Rain possible across most of SA and thunderstorms warnings for eight provinces

By Staff Writer
Published: 17 March 2026 [updated 18 March]

This forecast is for: Wed 18 March 2026
The maps cover: Wed 18 Mar – Wed 18 Mar


The latest forecast is available by clicking here.

A heat wave with persistently high temperatures is expected in places over most parts of the Eastern Cape on Wednesday, and hot and humid weather can be expected along the wild coast of the Eastern Cape.

Morning fog can be expected in many parts of the country.

Warnings from the SA Weather Service for Wednesday:

A. level 2 warning for severe thunderstorms resulting in localised flooding of susceptible roads, low-lying areas and bridges, large amounts of small hail, and localised damage to infrastructure due to damaging winds over parts of the Western Cape, Eastern Cape, Free State, North West, Limpopo, Gauteng and Mpumalanga as per the updated map.

B. level 1 warning for severe thunderstorms resulting in localised flooding of susceptible roads, low-lying areas and bridges, large amounts of small hail, and localised damage to infrastructure due to damaging winds over western and southern KwaZulu-Natal.

Regional forecasts from the SA Weather Service for Wednesday:

GAUTENG
Morning fog patches in the extreme east, otherwise partly cloudy and cool to warm with isolated showers and thundershowers.

MPUMALANGA
Morning fog patches along the escarpment and Highveld, otherwise partly cloudy and cool to warm with isolated showers and thundershowers.

LIMPOPO
Morning fog patches along the escarpment, otherwise partly cloudy and warm with isolated showers and thundershowers.

NORTH WEST
Morning fog patches in the east, otherwise partly cloudy and warm with scattered showers and thundershowers but isolated in the east.

THE FREE STATE
Morning fog patches in the east, otherwise partly cloudy and warm with scattered showers and thundershowers, but isolated in the east.

THE NORTHERN CAPE
Morning fog patches along the north coast, otherwise partly cloudy and warm to hot with isolated showers and thundershowers, except in the west. The wind along the coast will be light north-westerly.

THE WESTERN CAPE
Morning fog patches in the north-west, otherwise partly cloudy and warm to hot with isolated to scattered showers and thundershowers, except in the west. The wind along the coast will be fresh south-easterly.

THE WESTERN HALF OF THE EASTERN CAPE
Partly cloudy to cloudy and warm with scattered showers and thundershowers. The wind along the coast will be light to moderate south-westerly.

THE EASTERN HALF OF THE EASTERN CAPE
Cool in places in the north, otherwise partly cloudy and warm to hot with scattered showers and thundershowers, but isolated in places in the south-west. The wind along the coast will be light to moderate south-westerly.

KWAZULU-NATAL
Morning fog patches over the interior, otherwise partly cloudy and warm to hot with isolated showers and thundershowers, but scattered in the southern-central and western parts. The wind along the coast will be moderate to fresh north-easterly.

Travellers forecasts from the SA Weather Service for Wednesday:

PRETORIA
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 16/28°C

JOHANNESBURG
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 15/25°C

VEREENIGING
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 15/24°C

MBOMBELA
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 18/28°C

POLOKWANE
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 16/26°C

MAHIKENG
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 16/27°C

VRYBURG
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 15/28°C

BLOEMFONTEIN
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 16/28°C

KIMBERLEY
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 17/28°C

UPINGTON
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 20/33°C

CAPE TOWN
Partly cloudy.
Wind: Moderate to fresh south-easterly.
Minimum/Maximum: 20/27°C

GEORGE
Partly cloudy with scattered showers and rain.
Wind: Moderate to fresh south-easterly.
Minimum/Maximum: 19/25°C

GQEBERHA
Partly cloudy with scattered showers and thundershowers.
Wind: Light to moderate south-westerly.
Minimum/Maximum: 21/26°C

EAST LONDON
Partly cloudy with isolated showers and thundershowers.
Wind: Light to moderate south-westerly.
Minimum/Maximum: 21/28°C

DURBAN
Partly cloudy with isolated showers and thundershowers.
Wind: Moderate to fresh north-easterly.
Minimum/Maximum: 22/30°C

RICHARDS BAY
Partly cloudy with isolated showers and thundershowers.
Wind: Moderate to fresh north-easterly.
Minimum/Maximum: 22/33°C

PIETERMARITZBURG
Morning fog patches, otherwise partly cloudy with scattered
showers and thundershowers.
Minimum/Maximum: 17/32°C

This forecast is usually updated a few times per day.



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