Annual Weather Averages Near Johannesburg
Averages are for O.R. Tambo International Airport, which is 21 kilometers from Johannesburg.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 4 °C
Mean Temp: 17 °C
Precipitation: 65.8 mm
Humidity: 58%
Dew Point: 7 °C
Wind: 25 km/h
Pressure: 101.99 kPa
Visibility: 16 km
January Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 15 °C
Mean Temp: 21 °C
Precipitation: 141.0 mm
Humidity: 70%
Dew Point: 14 °C
Wind: 25 km/h
Pressure: 101.58 kPa
Visibility: 17 km
February Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 15 °C
Mean Temp: 20 °C
Precipitation: 121.5 mm
Humidity: 70%
Dew Point: 13 °C
Wind: 23 km/h
Pressure: 101.65 kPa
Visibility: 16 km
March Climate & Weather Averages in Johannesburg
High Temp: 25 °C
Low Temp: 13 °C
Mean Temp: 19 °C
Precipitation: 96.4 mm
Humidity: 68%
Dew Point: 12 °C
Wind: 22 km/h
Pressure: 101.80 kPa
Visibility: 16 km
April Climate & Weather Averages in Johannesburg
High Temp: 23 °C
Low Temp: 11 °C
Mean Temp: 17 °C
Precipitation: 44.8 mm
Humidity: 63%
Dew Point: 8 °C
Wind: 22 km/h
Pressure: 102.04 kPa
Visibility: 16 km
May Climate & Weather Averages in Johannesburg
High Temp: 21 °C
Low Temp: 7 °C
Mean Temp: 14 °C
Precipitation: 23.6 mm
Humidity: 52%
Dew Point: 3 °C
Wind: 22 km/h
Pressure: 102.25 kPa
Visibility: 16 km
June Climate & Weather Averages in Johannesburg
High Temp: 18 °C
Low Temp: 4 °C
Mean Temp: 11 °C
Precipitation: 8.2 mm
Humidity: 49%
Dew Point: -1 °C
Wind: 22 km/h
Pressure: 102.49 kPa
Visibility: 15 km
July Climate & Weather Averages in Johannesburg
High Temp: 18 °C
Low Temp: 4 °C
Mean Temp: 11 °C
Precipitation: 3.8 mm
Humidity: 47%
Dew Point: -2 °C
Wind: 23 km/h
Pressure: 102.59 kPa
Visibility: 15 km
August Climate & Weather Averages in Johannesburg
High Temp: 21 °C
Low Temp: 6 °C
Mean Temp: 14 °C
Precipitation: 12.8 mm
Humidity: 44%
Dew Point: -1 °C
Wind: 27 km/h
Pressure: 102.30 kPa
Visibility: 15 km
September Climate & Weather Averages in Johannesburg
High Temp: 25 °C
Low Temp: 10 °C
Mean Temp: 17 °C
Precipitation: 21.8 mm
Humidity: 42%
Dew Point: 2 °C
Wind: 29 km/h
Pressure: 102.03 kPa
Visibility: 16 km
October Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 12 °C
Mean Temp: 19 °C
Precipitation: 71.3 mm
Humidity: 54%
Dew Point: 7 °C
Wind: 30 km/h
Pressure: 101.84 kPa
Visibility: 17 km
November Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 13 °C
Mean Temp: 20 °C
Precipitation: 101.8 mm
Humidity: 63%
Dew Point: 11 °C
Wind: 30 km/h
Pressure: 101.66 kPa
Visibility: 17 km
December Climate & Weather Averages in Johannesburg
High Temp: 26 °C
Low Temp: 14 °C
Mean Temp: 20 °C
Precipitation: 142.7 mm
Humidity: 69%
Dew Point: 13 °C
Wind: 28 km/h
Pressure: 101.62 kPa
Visibility: 17 km