Extreme heat: Two provinces could see temperatures hit 40°C tomorrow

Residents in parts of the Western Cape and Northern Cape should prepare for extreme heat on Wednesday, 4 November 2026.

The South African Weather Service (SAWS) has issued an advisory for very hot to extremely hot conditions, warning that the heat could pose serious health risks.

The advisory will remain in effect from 07:00 until 18:00 on Wednesday.

Advisory: Very hot and extremely hot
Area: Western Cape and Northern Cape
Validity: 04 November 2026#saws #weatheroutlook #Warning #spring pic.twitter.com/3kpUK3HNAH

— SA Weather Service (@SAWeatherServic)

November 3, 2026

Which areas will experience extreme heat?

According to SAWS, the heat will affect several parts of the Western Cape, including the West Coast, Cape Winelands, Central Karoo and Little Karoo.

The advisory also covers the Hessequa and Swellendam municipalities in the Western Cape, as well as the interior of the Namakwa District in the Northern Cape.

Temperatures are expected to climb into the high 30s and could reach the low 40s in some areas during the day.

How could soaring temperatures affect residents?

SAWS has warned that extremely high temperatures can make it difficult for the body to cool itself through sweating.

This increases the risk of heat-related illnesses, including hyperthermia and heatstroke.

The advisory comes as South Africans prepare for local government elections on Wednesday.

SAWS has urged voters in affected areas to take precautions, particularly those who may have to stand in long queues outside polling stations.

Voters should carry drinking water, use umbrellas for shade and avoid spending unnecessary time in direct sunlight.

Those waiting to cast their votes should seek shaded or cooler areas whenever possible.

SAWS has advised residents to drink enough water throughout the day and limit their exposure to the sun.

The weather service has urged residents to take the advisory seriously and follow official weather updates as conditions develop.