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Barometric Pressure in South Africa

We monitor barometric pressure across 40 cities in South Africa, giving you up-to-date insights into local weather patterns.

Flag of South Africa

Whether you're tracking pressure changes for health reasons, planning outdoor activities, or planning a fishing trip, our data is tailored to conditions in South Africa, with detailed readings city by city.

South Africa Barometric Pressure Map

Depending on how many places we monitor in South Africa, the map displays a sampled set of barometric pressure data to give a clear overview of current conditions.

Here you can see which cities experienced the biggest and smallest changes in barometric pressure today. This helps highlight areas with the most stable or unstable weather patterns.

Most volatile

Least volatile

How is it calculated?

Our volatility “beta” number is generated by an algorithm that analyzes hourly barometric pressure changes. It looks at how much the pressure fluctuates from hour to hour. A beta of 0 means no change, perfectly stable pressure. The higher the decimal value, the more variation there has been throughout the day or over a longer period.

Weather Systems

Big weather systems, like the South Atlantic High and the South Indian High, control South Africa’s air pressure. These are large areas of high pressure over the oceans that help bring winds and weather into the country. Low pressure systems, especially from the south, can cause storms and colder weather.

Geography

South Africa’s land is made up of high plateaus, mountains, and coastal regions. The high central plateau, called the Highveld, usually has lower air pressure than the coastal areas because it’s higher above sea level. Mountains like the Drakensberg can block and redirect winds, making local pressure patterns change quickly.

Seasonal Cycles

During winter, South Africa has high pressure over the center and lower pressure cuased by cold fronts in the south. This brings dry air inland and rain to the coastal areas. In summer, a low pressure area forms over the land, pulling in moist air from the oceans and causing thunderstorms.

Climate Change

Climate change is shifting pressure patterns. The highs over the oceans are getting stronger and moving. This can lead to longer droughts in some areas, more intense storms in others, and more unpredictable weather overall for South Africa.

Places in South Africa

You can find your city in the lists below, by using our search, or on the South Africa Pressure Map above. We're tracking barometric pressure across multiple locations in South Africa to keep you informed.

Each city includes a pressure status showing whether it's currently high, normal or low, along with two volatility values: one for today and one for the full period, usually 14 days. These help you see how much the pressure is changing over time.

Other

Eastern Cape

Gauteng

KwaZulu-Natal

Limpopo

Mpumalanga

North West

Northern Cape

Orange Free State

Western Cape

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