Cooler conditions in the west on Friday and a disruptive rainfall warning for the Western Cape

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

This forecast is for: Fri 21 March 2025
The maps cover: Fri 21 Mar – Sun 23 Mar

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The west of the country and part of the interior cools off on Friday and morning fog can be expected as per the map, according to SA Weather, but a heat wave with persistently high temperatures is expected in places over Alfred Nzo District of the Eastern Cape until Friday (A on the map above).

Hot and humid weather will result in extremely uncomfortable conditions in places over Sarah Baartman DM, Amatole DM, Buffalo City Metro and OR Tambo DM in the Eastern Cape. (B on the map above).

Warnings from the SA Weather Service for Friday:

A. yellow level 1 warning disruptive rainfall is expected over parts of the Western Cape, as per the updated map above. A steep upper trough located to the west of the Western Cape is resulting in isolated to scattered showers and thundershowers across the region on Friday. This weather system is expected to bring significant rainfall, particularly affecting the Overberg, Cape Winelands, Garden Route, and Prince Albert municipalities. While numerical weather prediction models have shown some uncertainties, recent updates suggest that these areas may receive between 20 mm and 40 mm of rain, with localized spots potentially receiving even more.

Regional forecasts from SAWS for Friday:

1. GAUTENG
Partly cloudy and cool with isolated showers and thundershowers.
The expected UVB sunburn index: Moderate

2. MPUMALANGA
Cloudy with morning fog in places, otherwise partly cloudy and cool to warm with isolated showers and thundershowers.

3. LIMPOPO
Cloudy in the morning, otherwise partly cloudy and warm with isolated showers and thundershowers. It will be hot in the southern Lowveld.

4. NORTH WEST
Partly cloudy and warm with isolated showers and thundershowers.

5. FREE STATE
Partly cloudy and cool to warm, with isolated showers and thundershowers.

6. NORTHERN CAPE
Morning fog along the coast, otherwise cloudy and cool to warm with isolated showers and thundershowers, but partly cloudy in the east. The wind along the coast will be light north-westerly.

7. WESTERN CAPE
Fog along the coast in the morning and by the evening, otherwise cloudy and cool to warm with scattered showers and thundershowers. It will be hot in the south-east. The wind along the coast will be light to moderate north-westerly in the west, but easterly in the south.
The expected UVB sunburn index: High

8. WESTERN HALF OF THE EASTERN CAPE
Cloudy with morning fog in places along the coast and adjacent interior, otherwise partly cloudy and cool to warm with isolated thundershowers in the afternoon. It will be hot in places in the south-west. The wind along the coast will be light to moderate north-easterly.

9. EASTERN HALF OF THE EASTERN CAPE
Partly cloudy and warm to hot. The wind along the coast will be light north-easterly.

10. KWAZULU-NATAL
Morning fog over the interior, otherwise partly cloudy and warm to hot. Isolated showers and thundershowers are expected over the north-west. The wind along the coast will be fresh to strong north-easterly.
The expected UVB sunburn index: High

Travellers forecasts from SAWS for Friday:

PRETORIA
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 16/26°C
The expected UVB Sunburn Index: Moderate

JOHANNESBURG
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 14/24°C

VEREENIGING
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 14/26°C

MBOMBELA
Cloudy with morning fog, otherwise partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 16/29°C

POLOKWANE
Cloudy in the morning, otherwise partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 15/27°C

MAHIKENG
Partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 15/26°C

VRYBURG
Partly cloudy with isolated afternoon showers and thunder-showers.
Minimum/Maximum: 16/28°C

BLOEMFONTEIN
Partly cloudy with isolated afternoon showers and thunder-showers.
Minimum/Maximum: 15/28°C

KIMBERLEY
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 17/29°C

UPINGTON
Cloudy with isolated showers and thundershowers.
Minimum/Maximum: 22/28°C

CAPE TOWN
Cloudy with morning fog and scattered showers and rain in the morning.
Wind: Light north-westerly.
Minimum/Maximum: 19/22°C
The expected UVB Sunburn Index: High

GEORGE
Partly cloudy with morning fog, with scattered showers and thundershowers.
Wind: Light easterly.
Minimum/Maximum: 19/25°C

GQEBERHA
Cloudy with morning fog, otherwise partly cloudy with isolated thunderstorms in the afternoon.
Wind: Light north-easterly.
Minimum/Maximum: 19/25°C

EAST LONDON
Fine.
Wind: Light north-easterly.
Minimum/Maximum: 20/28°C

DURBAN
Partly cloudy.
Wind: Moderate to fresh northerly to north-easterly.
Minimum/Maximum: 19/29°C
The expected UVB Sunburn Index: High

RICHARDS BAY
Fine.
Wind: Fresh to strong northerly to north-easterly.
Minimum/Maximum: 18/31°C

PIETERMARITZBURG
Morning fog patches, otherwise partly cloudy.
Minimum/Maximum: 13/30°C

This forecast is usually updated a few times per day.

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