TUESDAY WEATHER: A cut-off low and scattered thunderstorms in the south-west – warning for damaging waves

By Staff Writer
Published: 18 May 2026

This forecast is for: Tue 19 May 2026
The maps cover: Tue 19 May – Wed 20 May


A cut-off low-pressure system is expected to influence the central and western interior of South Africa from Tuesday into Wednesday. As the system develops over the interior, it is expected to result in windy conditions, accompanied by isolated to scattered showers and thundershowers across several provinces.

Warnings from the SA Weather Service from Tuesday:

A. level 2 warning for damaging coastal wind leading to difficulty in navigation at sea is expected between Table Bay and Cape Agulhas.

Regional forecasts from the SA Weather Service for Tuesday:

GAUTENG
Partly cloudy and cold to cool with isolated showers and rain.

MPUMALANGA
Morning fog patches over the escapement and places in the Lowveld, otherwise partly cloudy and cool to warm with isolated showers and rain except the extreme south-eastern parts.

LIMPOPO
Morning fog patches over the northern interior, otherwise partly cloudy and cool with isolated showers and rain.

NORTH-WEST
Partly cloudy and cool, with isolated showers and thundershowers.

THE FREE STATE
Partly cloudy and cool, with isolated showers and thundershowers over the western parts.

THE NORTHERN CAPE
Partly cloudy and cool to warm with isolated showers and thundershowers but scattered in the central and southeastern parts. It will be cold in the southern interior. The wind along the coast will be light to moderate northerly to north-westerly.

THE WESTERN CAPE
Partly cloudy with isolated showers and thundershowers, except in the extreme west, but scattered in the central and eastern parts. The wind along the coast will be fresh to strong south-easterly to easterly, reaching gale force along the south-west coast.

THE WESTERN HALF OF THE EASTERN CAPE
Partly cloudy in the northern parts, otherwise cloudy and cool with isolated showers and thundershowers, but scattered in the south and west. The wind along the coast will be light to moderate easterly, becoming fresh to strong from late morning.

THE EASTERN HALF OF THE EASTERN CAPE
Morning fog in places over the interior, otherwise cloudy and cool with isolated showers and thundershowers south of the escarpment. The wind along the coast will be light and variable, becoming moderate to fresh south-easterly from late morning.

KWAZULU-NATAL
Morning and evening fog patches, otherwise partly cloudy and cool to warm with isolated showers and rain in the east. It will become cloudy in the southern interior in the evening. The wind along the coast will be light northerly to north-westerly in the north in the early morning, otherwise moderate southerly to south-easterly.

Travellers forecasts from the SA Weather Service for Tuesday:

PRETORIA
Partly cloudy with isolated showers and rain.
Minimum/Maximum: 11/19°C

JOHANNESBURG
Partly cloudy with isolated showers and rain.
Minimum/Maximum: 10/16°C

VEREENIGING
Partly cloudy with isolated showers and rain.
Minimum/Maximum: 07/20°C

MBOMBELA
Partly cloudy with isolated showers and rain.
Minimum/Maximum: 11/22°C

POLOKWANE
Partly cloudy with isolated showers and rain.
Minimum/Maximum: 10/20°C

MAHIKENG
Party cloudy with isolated showers and thundershowers.
Minimum/Maximum: 08/21°C

VRYBURG
Party cloudy with isolated showers and thundershowers.
Minimum/Maximum: 09/23°C

BLOEMFONTEIN
Party cloudy.
Minimum/Maximum: 04/21°C

KIMBERLEY
Party cloudy with isolated showers and thundershowers.
Minimum/Maximum: 08/23°C

UPINGTON
Party cloudy with isolated showers and thundershowers.
Minimum/Maximum: 12/26°C

CAPE TOWN
Cloudy in the morning, otherwise partly cloudy.
Wind: Moderate to fresh south-easterly.
Minimum/Maximum: 15/24°C

GEORGE
Cloudy with isolated showers and thundershowers.
Wind: Light and variable, becoming moderate south-easterly from the afternoon.
Minimum/Maximum: 13/20°C

GQEBERHA
Cloudy with scattered showers and rain. Thundershowers are possible at times.
Wind: Light to moderate easterly, becoming fresh from late morning.
Minimum/Maximum: 16/21°C

EAST LONDON
Partly cloudy at first, otherwise cloudy with isolated showers and thundershowers.
Wind: Light and variable, becoming light to moderate south-easterly from late morning.
Minimum/Maximum: 17/21°C

DURBAN
Fine until mid-morning, otherwise partly cloudy with isolated showers and rain from the afternoon.
Wind: Moderate southerly to south-westerly.
Minimum/Maximum: 17/23°C

RICHARDS BAY
Partly cloudy with isolated showers and rain from the afternoon.
Wind: Light north-westerly, becoming light southerly to south-westerly from late morning.
Minimum/Maximum: 16/25°C

PIETERMARITZBURG
Partly cloudy becoming cloudy with isolated showers and rain in the evening.
Minimum/Maximum: 09/22°C

This forecast is usually updated a few times per day.



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