Johannesburg Weather in September: Climate, Temperature & Travel Tips
Avg 17.1°C · 12mm rain — September is spring in Johannesburg.
- Avg high
- 24.7 °C
- Avg low
- 9.9 °C
- Avg
- 17.1 °C
- Precipitation
- 12 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
September in Johannesburg, South Africa brings spring conditions: average temperature 17.1°C, average high 24.7°C, average low 9.9°C. Monthly rainfall averages 12mm, making it a very dry time of year.
Conditions are pleasant for most travel activities.
What to Pack
- Light layers (long sleeves + light jacket for evenings)
- Comfortable walking shoes
Best Things to Do
- Walking tours and city exploration
- Parks and outdoor cafes
- Seasonal food and night markets (where applicable)
Pros and Cons of Visiting in September
Pros:
- Pleasant temperatures for walking and outdoor sightseeing
- Low rainfall — minimal disruption to outdoor plans
- Shoulder season often means smaller crowds and lower prices
Cons:
- No major weather drawbacks for typical activities
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 January 19.9°C
- 2 December 19.6°C
- 3 February 19.3°C
- 1 July 9.8°C
- 2 June 10.1°C
- 3 May 12.9°C
FAQ
01 What is the average temperature in Johannesburg in September? +
The average is 17.1°C, with a high of 25°C and a low of 10°C.
02 What is Johannesburg like to visit in September? +
It is spring in Johannesburg, which is ideal for outdoor exploration.
03 Does it rain often in Johannesburg during September? +
Average rainfall is 12mm, which is very dry.
04 What should I pack for Johannesburg in September? +
Light layers (long sleeves + light jacket for evenings); Comfortable walking shoes.
05 Is September a peak travel season for Johannesburg? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17