Weather Alert: Heatwave Conditions Continue Across South Africa — Stay Informed and Prepared

South Africa faces ongoing heatwave conditions that impact daily life across many provinces. On Wednesday, 20 August 2025, this article provides essential weather warnings and updates to help residents stay safe and prepared during this period of extreme heat and other related weather events.

SEE FULL FORECAST: Today’s Weather Forecast – Wednesday, 20 August 2025

Understanding the Current Heatwave in South Africa

A heatwave happens when temperatures stay above normal for several days, posing health risks. This heatwave is South Africa’s third this season and is expected to continue until at least Tuesday, 26 August 2025. It brings hot, dry weather across seven provinces, increasing wildfire risks and heat stress.

Provinces Affected by the Heatwave

Stay informed with the latest heatwave and weather warnings across South Africa. Learn about fire risks, safety tips, and provincial weather updates for August 20, 2025.

Gauteng

Gauteng is experiencing warm and fine weather with a high risk of sunburn due to strong ultraviolet (UV) rays. Anyone spending time outside should wear sunscreen, a hat, and drink plenty of water.

Mpumalanga

Mpumalanga has morning fog patches in the southeast but remains warm and fine. The heat encourages outdoor activities, but caution against heatstroke is advised.

Limpopo

Limpopo is predominantly warm, with hotter temperatures in the northern parts. Protective measures against heat exhaustion are necessary.

North West

Warm and dry conditions prevail, increasing the wildfire risk particularly in natural and grassland areas.

Northern Cape

Parts of Northern Cape have extremely high wildfire danger, especially in the central region. There will be morning fog and some clouds along the coast.

Western Cape

The Western Cape experiences cool and cloudy conditions, with light rain in southwestern coastal areas. Windy weather is expected in southern parts, providing relief from the heat.

Eastern Cape

The western half of the Eastern Cape faces morning fog. Scattered isolated showers are expected in the east with overall cool and fine conditions elsewhere.

KwaZulu-Natal

KwaZulu-Natal is cloudy and cool with isolated showers, becoming partly cloudy later in the day. Coastal winds will increase, requiring caution near the shore.

Free State

The Free State will be cooler in the south, becoming partly cloudy and windy. The rest of the province experiences warm and fine conditions.

Fire Danger Is High: Precautions to Take

Certain areas, including parts of Northern Cape, Western Cape, Eastern Cape, and North West, face extremely high fire danger warnings due to dry, warm, and windy weather. Wildfires spread quickly in these conditions.

• Avoid open flames outdoors.
• Do not discard cigarette butts on dry grass.
• Report any fires immediately to local authorities.
• Keep firebreaks clear around your home.

Heat-Related Health Risks and How to Stay Safe

Extended exposure to heat can cause heat exhaustion and heatstroke, which are serious health conditions.

Signs include:

• Dizziness or weakness
• Headaches
• Rapid heartbeat and breathing
• Nausea or confusion

Stay safe by:

• Drinking plenty of water throughout the day.
• Avoiding strenuous outdoor activities around midday.
• Wearing light and loose clothing.
• Taking breaks in shaded or air-conditioned areas.

Weather Hazards Besides Heatwave

Fog Conditions

Fog is present in parts of Mpumalanga, Eastern Cape, and Northern Cape, reducing visibility for drivers and increasing travel risks. Drive carefully, use fog lights, and reduce speed.

Windy Weather

Strong winds are forecast in parts of Western and Eastern Cape, and coastal KwaZulu-Natal. Expect dust and debris, and secure outdoor objects accordingly.

Cold Front Approaching Western Cape

A cold front is expected late on Wednesday, bringing relief from the heat, with showers possible along the southwest coast. This front signals a shift to cooler, wetter weather in these areas.

Why It’s Important to Keep Updated on Weather Alerts

Weather can change quickly. It is vital to follow credible sources like the South African Weather Service (WeatherSA) and trusted news outlets for the latest updates.

• Check weather alerts daily.
• Prepare for changing conditions.
• Share warnings with family and community.

How the Heatwave Affects Daily Life and Activities

• Outdoor events may need adjustments; schedule activities for cooler morning or late afternoon hours.
• Agricultural activities require careful water management to protect crops.
• Electricity demand may rise as people use cooling appliances more often.

Simple Steps to Prepare Your Home and Community

• Ensure windows and doors have proper shading.
• Keep extra water supplies for drinking and emergencies.
• Remove flammable debris from around your property.
• Stay connected with local community alerts and support networks.

When to Seek Medical Help

Seek urgent medical attention if someone shows symptoms of heatstroke, such as loss of consciousness, confusion, or seizures, as these can be life-threatening.

Staying Weather-Wise During the Heatwave

South Africa’s ongoing heatwave combined with wildfire risks and weather fluctuations requires vigilance. By understanding the risks, following safety advice, and keeping updated, residents can protect themselves and their communities effectively.

Stay safe, stay hydrated, and stay informed.