Gauteng (Johannesburg)
September
Weather in Gauteng for September 2025
Your guide to Gauteng weather in September - trends and predictions
In general, the average temperature in Gauteng at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 26.4 °C by the end of September.
With an average of 4 rainy days, Gauteng experiences minimal rainfall in September.
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26
Dry days
4
Rainy days
0
Snow days
26°/14°
Temperatures
20 km/h
Avg max wind
26 %
Avg humidity
Gauteng in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 25° | 3 26° | 4 26° | 5 26° | 6 26° | 7 25° |
| 8 27° | 9 28° | 10 25° | 11 26° | 12  24° | 13 24° | 14 27° |
| 15 29° | 16 28° | 17 27° | 18 26° | 19  27° | 20 22° | 21 19° |
| 22 24° | 23  25° | 24 27° | 25  28° | 26 25° | 27 25° | 28  26° |
| 29 28° | 30 26° |
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Temperatures trend during September in Gauteng
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 24° /11° | 0 mm | 7 | |
| 2 Sept. | Sunny | 25° /14° | 0 mm | 7 | |
| 3 Sept. | Sunny | 26° /14° | 0 mm | 8 | |
| 4 Sept. | Sunny | 26° /14° | 0 mm | 7 | |
| 5 Sept. | Sunny | 26° /15° | 0 mm | 7 | |
| 6 Sept. | Sunny | 26° /14° | 0 mm | 8 | |
| 7 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 8 Sept. | Sunny | 27° /15° | 0 mm | 8 | |
| 9 Sept. | Sunny | 28° /14° | 0 mm | 7 | |
| 10 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 11 Sept. | Sunny | 26° /10° | 0 mm | 7 | |
| 12 Sept. | Partly cloudy | 24° /11° | 0 mm | 7 | |
| 13 Sept. | Sunny | 24° /12° | 0 mm | 7 | |
| 14 Sept. | Sunny | 27° /14° | 0 mm | 8 | |
| 15 Sept. | Sunny | 29° /16° | 0 mm | 8 | |
| 16 Sept. | Sunny | 28° /16° | 0.1 mm | 7 | |
| 17 Sept. | Sunny | 27° /14° | 0.2 mm | 7 | |
| 18 Sept. | Sunny | 26° /14° | 0 mm | 7 | |
| 19 Sept. | Thundery outbreaks possible | 27° /15° | 0.3 mm | 7 | |
| 20 Sept. | Sunny | 22° /11° | 1 mm | 6 | |
| 21 Sept. | Sunny | 19° /12° | 0.7 mm | 5 | |
| 22 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 23 Sept. | Overcast | 25° /13° | 0 mm | 7 | |
| 24 Sept. | Sunny | 27° /14° | 0 mm | 7 | |
| 25 Sept. | Patchy rain possible | 28° /15° | 0.2 mm | 7 | |
| 26 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 27 Sept. | Patchy rain possible | 25° /13° | 0.3 mm | 7 | |
| 28 Sept. | Cloudy | 26° /14° | 0.9 mm | 7 | |
| 29 Sept. | Sunny | 28° /16° | 0.3 mm | 8 | |
| 30 Sept. | Sunny | 26° /14° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Gauteng in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Gauteng forecast closer to your planned date for the most up-to-date weather information.
Gauteng in September - FAQ
What are the expected maximum and minimum temperatures in Gauteng during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Gauteng during September?
Rainfall in Gauteng during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 4 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Gauteng during September?
The average wind speed in Gauteng during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Gauteng
Explore the daily rainfall trends and prepare for Gautengs September weather 💧
UV exposure in Gauteng during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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