The temperatures in Johannesburg in September are comfortable with low of 14°C and and high up to 26°C.
The wather in Johannesburg in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Johannesburg in September 2025.
If you’re planning to visit Johannesburg in the near future, we highly recommend that you review the 14 day weather forecast for Johannesburg before you arrive.
Temperatures
26° / 14°
Rainy Days
1
Snowy Days
0
Dry Days
29
Rainfall
12
mm
Sun Hours
11.9
Hrs
