Barometric Pressure in Johannesburg, South Africa 
1019 hPa
18 ℃
49%
2.91 m/s
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
The average pressure in Johannesburg, Gauteng, South Africa today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fairly fine, possible showers early
Rapid Pressure Changes
Rapid pressure changes detected in Johannesburg, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Fall : ()
The daily total fluctuation in pressure in Johannesburg is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Johannesburg hour by hour across the next 6 hourly readings.
The weather in Johannesburg, Gauteng, South Africa is affected by the city's location in a high-altitude valley. This creates changes in barometric pressure that bring different weather conditions.
Johannesburg's high elevation and surrounding mountains influence atmospheric pressure, causing it to vary greatly over short distances. This leads to changing weather patterns.
During summer, barometric pressure is typically low, bringing hot and rainy weather. In winter, pressure is high, resulting in cooler and drier conditions.
Johannesburg has a subtropical highland climate, which means it experiences large fluctuations in barometric pressure, leading to varied and unpredictable weather.