MONDAY WEATHER: Thunderstorms, wind, waves, storm surge and snow

By Staff Writer
Published: 19 April 2026

This forecast is for: Mon 20 April 2026
The maps cover: Mon 20 Apr – Tue 21 Apr


Warnings from the SA Weather Service for Monday:

A. level 2 warning for severe thunderstorms leading to localised flooding of susceptible roads, low-lying areas and bridges, as well as localised damage to infrastructure and settlements (informal) over Limpopo.

B. level 2 warning for damaging wind and waves leading to disruption of ports/small harbours activities for a short period of time and difficulty in navigation at sea between Alexander Bay and Algoa Bay.

C. level 2 warning for storm surge leading to localised damage to coastal infrastructure (e.g. walkways, pipelines, property, road and rail routes), localised disruptions to beach front activities (e.g. closure of beaches for swimming, shore/rock angling) and localised flooding of some coastal areas between Plettenberg Bay and Algoa Bay.

SEE ALSO: Snowfall still possible for the Western Cape and Northern Cape this weekend.

Regional forecasts from the SA Weather Service for Monday:

GAUTENG
Partly cloudy and warm but cool in the southwest with scattered showers and thundershowers.

MPUMALANGA
Morning fog patches in the Highveld, otherwise partly cloudy and cool to warm with scattered showers and thundershowers.

LIMPOPO
Morning fog patches in the south-west, otherwise partly cloudy and warm with scattered showers and thundershowers.

NORTH-WEST
Partly cloudy and cool to warm, with isolated showers and thundershowers but scattered in the east.

THE FREE STATE
cloudy and cool with isolated showers and thundershowers but scattered in the north-eastern parts.

THE NORTHERN CAPE
Fine to partly cloudy and cool but cold in the extreme south. The wind along the coast will be moderate north-westerly, becoming moderate south-easterly from the afternoon.

THE WESTERN CAPE
Cloudy to partly cloudy and cool but cold over the western interior, becoming fine over the eastern parts from the evening. Isolated showers are expected in most places, clearing from the eastern parts from mid-morning. Possible light snow is expected over the south-western high-lying areas. The wind along the coast will be Moderate to fresh north-westerly to westerly, but strong to near gale force along the south-west and south coasts.

THE WESTERN HALF OF THE EASTERN CAPE
Fine and cool. The wind along the coast will be Fresh to strong westerly.

THE EASTERN HALF OF THE EASTERN CAPE
Fine and cool. The wind along the coast will be Moderate to fresh south-westerly.

KWAZULU-NATAL
Partly cloudy and cool to warm, but hot in the north-east. It will become cloudy in the afternoon with isolated showers and thundershowers, but scattered in the extreme north. The wind along the coast will be moderate to fresh northerly to north-westerly north of Durban at first, otherwise fresh to strong southerly to south-westerly.

Travellers forecasts from the SA Weather Service for Monday:

PRETORIA
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 16/26°C

JOHANNESBURG
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 13/25°C

VEREENIGING
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 14/24°C

MBOMBELA
Partly cloudy with scattered showers and thundershowers.
Minimum/Maximum: 17/29°C

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

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

VRYBURG
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 8/22°C

BLOEMFONTEIN
Fine.
Minimum/Maximum: 7/18°C

KIMBERLEY
Fine.
Minimum/Maximum: 7/18°C

UPINGTON
Fine.
Minimum/Maximum: 8/18°C

CAPE TOWN
Cloudy with isolated showers.
Wind: Fresh to strong westerly to north-westerly.
Minimum/Maximum: 12/16°C

GEORGE
Cloudy to partly cloudy becoming fine from the evening, with isolated showers in the early morning.
Wind: Fresh north-westerly, becoming light from the evening.
Minimum/Maximum: 9/19°C

GQEBERHA
Fine.
Wind: Fresh to strong westerly.
Minimum/Maximum: 13/21°C

EAST LONDON
Partly cloudy, becoming cloudy with isolated showers and thundershowers in the afternoon.
Wind: Moderate to fresh south-westerly.
Minimum/Maximum: 16/22°C

DURBAN
Fine, becoming partly cloudy with isolated evening showers and thundershowers.
Wind: Moderate north-westerly at first, otherwise moderate to fresh southerly to south-easterly.
Minimum/Maximum: 23/28°C

RICHARDS BAY
Partly cloudy with isolated showers and thundershowers.
Wind: Moderate northerly to north-westerly in the morning, otherwise moderate to fresh southerly to south-easterly, becoming strong at times.
Minimum/Maximum: 24/29°C

PIETERMARITZBURG
Partly cloudy with isolated showers and thundershowers.
Minimum/Maximum: 16/24°C

This forecast is usually updated a few times per day.



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