Severe thunderstorms, disruptive rainfall, fog and snow on the radar for Tuesday

By Staff Writer
Published: 14 April 2025 [updated 15 April]

This forecast is for: Tue 15 April 2025
The maps cover: Tue 15 Apr – Thu 17 Apr

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Partly cloudy and cool, with isolated to scattered showers and thundershowers over the central & eastern parts of the country, but widespread over KwaZulu-Natal with a possibility of localised flooding and light snow over the Drakensberg mountains, according to the SA Weather Service.

A surface high pressure system ridges over the eastern parts of KwaZulu-Natal, supported by a weak cut-off low over the southern part of South Africa that extends a low pressure along the east coast resulting in widespread showers and rain but scattered in the north-east.

Continuous rainfall from Monday into Tuesday resulting in an accumulation of 30-60mm may cause localised but significant impacts over most parts of KZN except the north-eastern parts on Tuesday.

SEE ALSO: Snow possible in Lesotho and South Africa from Tuesday.

Warnings from the SA Weather Service for Tuesday:

A. yellow level 2 warning severe thunderstorms leading to localised flooding of susceptible roads, low-lying areas or bridges as well as localised damage to settlements over an open area are expected over the north-eastern parts of Northern Cape.

B. yellow level 4 warning disruptive rainfall resulting in flooding of roads and settlements (formal and informal) and major disruption of traffic flow due to major roads being flooded or closed is expected over most parts of KwaZulu-Natal except in the north-east.

C. yellow level 2 warning disruptive rainfall resulting in heavy downpours which will lead to flooding of susceptible areas, roads and bridges, localized damage to properties and temporal disruptions of municipal services is expected in over the southern parts of Mpumalanga.

Regional forecasts from SAWS for Tuesday:

1. GAUTENG
Partly cloudy and cool to warm with isolated afternoon showers and thundershowers.
The expected UVB sunburn index: Very High

2. MPUMALANGA
Cloudy and cool to warm with isolated showers and thundershowers but scattered in the south.

3. LIMPOPO
Fine in the Western Bushveld in the morning, otherwise partly cloudy and warm to hot.

4. NORTH-WEST PROVINCE
Morning fog patches in places, otherwise partly cloudy to cloudy and cool to warm, with isolated to scattered showers except over the north-eastern parts. It will be windy over the western parts.

5. FREE STATE
Morning fog patches in places, otherwise partly cloudy and cool, with scattered showers and thundershowers, but isolated over the south-western parts.

6. NORTHERN CAPE
Fine the west, otherwise partly cloudy, windy and cool to warm with isolated to scattered showers and thundershowers over the central and the eastern parts. The wind along the coast will be fresh to strong south-easterly.

7. WESTERN CAPE
Partly cloudy and cool to warm but fine in the western parts. It will clear in the central parts in the evening. The wind along the coast will be moderate to fresh southerly to south-easterly but light to moderate westerly along the south coast.
The expected UVB sunburn index: High

8. WESTERN HALF OF THE EASTERN CAPE
Morning fog in places in the north, otherwise fine and cool, but partly cloudy to cloudy with light evening rain in places along the coast and adjacent interior. The wind along the coast will be light to moderate westerly, but south-westerly from late morning.

9. EASTERN HALF OF THE EASTERN CAPE
Morning fog in places along the escarpment, otherwise partly cloudy and cool with isolated showers and thundershowers, but scattered in the east where it will be cloudy and cold. The wind along the coast will be light to moderate westerly, but south-westerly from late morning, becoming light and variable from the evening.

10. KWAZULU-NATAL
Morning fog in places over the interior, otherwise cloudy and cold to cool but warm in the extreme north-east with widespread showers and thundershowers but scattered in the north-east. The wind along the coast will be moderate to fresh southerly to south-westerly.
The expected UVB sunburn index: Moderate

Travellers forecasts from SAWS for Tuesday:

PRETORIA
Partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 14/26°C
The expected UVB Sunburn Index: Very High

JOHANNESBURG
Partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 12/25°C

VEREENIGING
Partly cloudy with isolated afternoon showers and thundershowers.
Minimum/Maximum: 12/25°C

MBOMBELA
Cloudy with isolated thundershowers and showers.
Minimum/Maximum: 16/27°C

POLOKWANE
Fine in the morning, otherwise partly cloudy.
Minimum/Maximum: 14/27°C

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

VRYBURG
Partly cloudy and windy, with scattered showers and thundershowers.
Minimum/Maximum: 15/23°C

BLOEMFONTEIN
Partly cloudy and windy, with scattered showers and thundershowers.
Minimum/Maximum: 13/22°C

KIMBERLEY
Partly cloudy, windy with isolated showers and thundershowers.
Minimum/Maximum: 14/22°C

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

CAPE TOWN
Fine.
Wind: Moderate southerly to south-easterly.
Minimum/Maximum: 15/21°C
The expected UVB Sunburn Index: High

GEORGE
Partly cloudy with morning fog patches.
Wind: Light and variable.
Minimum/Maximum: 11/18°C

GQEBERHA
Partly cloudy with light rain from the evening.
Wind: Moderate south-westerly becoming light and variable in the evening.
Minimum/Maximum: 12/19°C

EAST LONDON
Fine, becoming cloudy with isolated showers and rain from the afternoon.
Wind: Moderate to fresh south-westerly, becoming light and variable in the evening.
Minimum/Maximum: 14/21°C

DURBAN
Cloudy with widespread showers and thundershowers.
Wind: Moderate to fresh southerly to south-westerly.
Minimum/Maximum: 18/21°C
The expected UVB Sunburn Index: Moderate

RICHARDS BAY
Cloudy with widespread showers and thundershowers.
Wind: Moderate to fresh southerly to south-westerly.
Minimum/Maximum: 18/23°C

PIETERMARITZBURG
Morning fog, otherwise cloudy with widespread showers and thundershowers.
Minimum/Maximum: 14/16°C

This forecast is usually updated a few times per day.

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