Weather in Johannesburg in May
May in Johannesburg is cool with average temperatures around 14.2°C (57.6°F). Light rainfall with only 16mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
21.9°C
71.4°F
Low
6.6°C
43.9°F
Precipitation
16 mm
0.6 inches
~2 rainy days
Conditions
Humidity
54%
Comparison to Adjacent Months
May is 3.1°C cooler than April, 27mm drier than April.
May is 3.0°C warmer than June.