The Gauteng weather forecast this week shows a sharp rise in temperatures. Johannesburg, Pretoria, and Vereeniging will experience summer-like conditions after weeks of cold mornings.
The South African Weather Service (SAWS) has issued alerts for hot and dry weather. Experts say the sudden jump in temperatures could affect health, energy use, and daily routines.
Gauteng Weather Forecast
How Hot Will It Get?
- Johannesburg: From 9°C in the morning to highs of 31°C.
- Pretoria: Rising from 12°C to 33°C.
- Vereeniging: From 7°C to 32°C.
These temperatures mark a big seasonal shift.
Dr Maryke Botha, climatologist at the University of Pretoria, explains:
“Such quick rises are common in Gauteng during spring, but they increase heat stress and health risks for many residents.”
Health Risks of Extreme Heat
Who Is Most at Risk?
The Department of Health defines extreme heat as maximums above 35°C or three days in a row that are 5°C above average.
Even below this level, heat can be dangerous. Groups at higher risk include:
- Older people
- Babies and young children
- People with chronic illnesses
- Residents in areas without cooling systems
Dr Thabo Mokoena, an emergency physician in Johannesburg, says:
“Dehydration and heat stress happen quickly. Hydration and rest are the best prevention.”
Staying Safe in the Heat
Tips for Residents
- Drink water often, even if you are not thirsty.
- Wear light, breathable clothing.
- Avoid alcohol and caffeine.
- Stay in shaded or cool places where possible.
Limit Midday Activity
The World Health Organisation (WHO) advises avoiding outdoor activity between 11 a.m. and 3 p.m. If outdoor work is unavoidable, take frequent breaks in the shade.
Warning Signs
Look out for:
- Dizziness or headaches
- Muscle cramps
- Nausea or fainting
- Fast heartbeat
Seek medical help if symptoms become severe.
Gauteng Weather and Climate Change
Why Temperatures Are Rising
Gauteng’s Highveld climate is known for cold mornings and warm afternoons. Climate change is making these swings sharper and more common.
Prof. Francois Engelbrecht, a climate scientist at Wits University, explains:
“Cities like Johannesburg and Pretoria trap heat because of concrete and buildings. This heat island effect raises daytime highs and slows cooling at night.”
The Long-Term Outlook
SAnews reports that South Africa is facing hotter summers and shorter winters. This affects health, water supplies, and electricity demand across the province.
Government and Community Action
Early Warnings
The South African Weather Service issues alerts for heatwaves and extreme conditions. Residents should check updates on weathersa.co.za and local news.
Public Awareness
Each summer, the Department of Health runs campaigns to warn residents about heat dangers. Schools and clinics share safety tips with communities.
Helping Each Other
Families and neighbours should check on the elderly, children, and people with health problems. Sharing water or offering shade can prevent serious health issues.
What Residents Should Remember
The Gauteng weather forecast shows highs in the low 30s this week. These may not yet meet official heatwave criteria, but the risks are still serious.
Gauteng communities are encouraged to prepare now, take simple steps to stay cool, and look out for those most vulnerable to the heat.
Check Out: Today’s Weather Forecast – 31 August 2025
