Johannesburg
September
Weather in Johannesburg for September 2025
Your guide to Johannesburg weather in September - trends and predictions
In general, the average temperature in Johannesburg at the beginning of September is 26 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 28 °C by the end of September.
Precipitation in Johannesburg during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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29
Dry days
1
Rainy days
0
Snow days
26°/13°
Temperatures
19 km/h
Avg max wind
30 %
Avg humidity
Johannesburg in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 25° | 3 27° | 4 27° | 5 27° | 6 27° | 7 25° |
| 8 24° | 9 27° | 10 26° | 11 27° | 12 26° | 13 24° | 14 26° |
| 15 29° | 16 28° | 17 27° | 18 25° | 19 27° | 20  24° | 21 21° |
| 22 24° | 23 26° | 24 28° | 25 29° | 26 29° | 27 27° | 28  28° |
| 29 29° | 30 26° |
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Temperatures trend during September in Johannesburg
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° /9° | 0 mm | 7 | |
| 2 Sept. | Sunny | 25° /11° | 0 mm | 7 | |
| 3 Sept. | Sunny | 27° /13° | 0 mm | 8 | |
| 4 Sept. | Sunny | 27° /14° | 0 mm | 8 | |
| 5 Sept. | Sunny | 27° /14° | 0.1 mm | 7 | |
| 6 Sept. | Sunny | 27° /13° | 0.1 mm | 8 | |
| 7 Sept. | Sunny | 25° /12° | 0.9 mm | 7 | |
| 8 Sept. | Sunny | 24° /13° | 0.1 mm | 7 | |
| 9 Sept. | Sunny | 27° /12° | 0 mm | 7 | |
| 10 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| 11 Sept. | Sunny | 27° /11° | 0 mm | 8 | |
| 12 Sept. | Sunny | 26° /11° | 0 mm | 8 | |
| 13 Sept. | Sunny | 24° /11° | 0 mm | 7 | |
| 14 Sept. | Sunny | 26° /12° | 0 mm | 7 | |
| 15 Sept. | Sunny | 29° /14° | 0 mm | 8 | |
| 16 Sept. | Sunny | 28° /14° | 0.1 mm | 8 | |
| 17 Sept. | Sunny | 27° /13° | 0.1 mm | 8 | |
| 18 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 19 Sept. | Sunny | 27° /13° | 0.2 mm | 8 | |
| 20 Sept. | Partly cloudy | 24° /11° | 0.9 mm | 7 | |
| 21 Sept. | Partly cloudy | 21° /11° | 2.3 mm | 6 | |
| 22 Sept. | Sunny | 24° /11° | 0 mm | 6 | |
| 23 Sept. | Sunny | 26° /12° | 0 mm | 7 | |
| 24 Sept. | Sunny | 28° /14° | 0 mm | 8 | |
| 25 Sept. | Sunny | 29° /14° | 0.1 mm | 8 | |
| 26 Sept. | Partly cloudy | 29° /14° | 0 mm | 8 | |
| 27 Sept. | Sunny | 27° /15° | 0.2 mm | 7 | |
| 28 Sept. | Moderate rain at times | 28° /15° | 0.7 mm | 8 | |
| 29 Sept. | Sunny | 29° /15° | 0.7 mm | 8 | |
| 30 Sept. | Sunny | 26° /14° | 0.8 mm | 7 | |
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Important Notice
Our weather forecast for Johannesburg 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 Johannesburg forecast closer to your planned date for the most up-to-date weather information.
Johannesburg in September - FAQ
What are the expected maximum and minimum temperatures in Johannesburg during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Johannesburg during September?
Rainfall in Johannesburg during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 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 Johannesburg during September?
The average wind speed in Johannesburg during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Johannesburg
Explore the daily rainfall trends and prepare for Johannesburgs September weather 💧
UV exposure in Johannesburg during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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