Weather in Johannesburg for September 2026
Until now, September 2026 in Johannesburg is cooler than usual, with temperatures averaging 21.9 °C, this is 3.7 °C below the typical seasonal average.
Expect cooler weather in the next days in Johannesburg with the forecast suggesting a temperature of 22.6 °C, lower than the historical average.
In general, the average temperature in Johannesburg at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 24.7 °C by the end of September.
With an average of 3 rainy days, Johannesburg experiences minimal rainfall in September.
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Johannesburg Weather September
Temperatures trend during September in Johannesburg
September weather in Johannesburg day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 25° /11° | 0 mm | 7 | |
| 2 Sept. | Sunny | 25° /12° | 0 mm | 7 | |
| 3 Sept. | Sunny | 27° /14° | 0 mm | 8 | |
| 4 Sept. | Sunny | 27° /14° | 0.6 mm | 7 | |
| 5 Sept. | Sunny | 26° /14° | 0.1 mm | 7 | |
| 6 Sept. |  Patchy rain possible | 26° /13° | 1.5 mm | 6 | |
| 7 Sept. | Sunny | 23° /12° | 1.4 mm | 6 | |
| 8 Sept. | Sunny | 24° /13° | 0.1 mm | 7 | |
| 9 Sept. | Sunny | 26° /13° | 0.2 mm | 7 | |
| 10 Sept. | Sunny | 26° /13° | 0 mm | 7 | |
| 11 Sept. | Sunny | 27° /12° | 0 mm | 8 | |
| 12 Sept. | Sunny | 26° /13° | 0 mm | 8 | |
| 13 Sept. | Sunny | 25° /16° | 0 mm | 9.3 | |
| 14 Sept. |  Overcast | 25° /13° | 7.6 mm | 9.1 | |
| 15 Sept. | Patchy rain possible | 22° /12° | 19.8 mm | 9.2 | |
| 16 Sept. | Sunny | 25° /14° | 0 mm | 9.8 | |
| 17 Sept. | Sunny | 27° /18° | 0.1 mm | 9.4 | |
| 18 Sept. | Patchy rain possible | 24° /14° | 11.4 mm | 6 | |
| 19 Sept. | Patchy rain possible | 20° /13° | 12.2 mm | 5 | |
| 20 Sept. | Sunny | 18° /12° | 39.2 mm | 6 | |
| 21 Sept. | Sunny | 20° /11° | 0.1 mm | 6 | |
| 22 Sept. | Sunny | 22° /13° | 0 mm | 7 | |
| 23 Sept. | Sunny | 23° /14° | 0 mm | 7 | |
| 24 Sept. | Overcast | 21° /13° | 0 mm | 6 | |
| 25 Sept. | Overcast | 24° /13° | 0 mm | 7 | |
| 26 Sept. | Sunny | 20° /8° | 0.6 mm | 7 | |
| 27 Sept. | Sunny | 27° /15° | 0.2 mm | 7 | |
| 28 Sept. |  Moderate rain at times | 28° /15° | 1 mm | 7 | |
| 29 Sept. | Sunny | 28° /14° | 2.1 mm | 8 | |
| 30 Sept. | Sunny | 25° /13° | 0.6 mm | 7 | |
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Johannesburg in September - FAQ
What are the expected maximum and minimum temperatures in Johannesburg during September?
How much rainfall should be expected in Johannesburg during September?
What are the typical wind conditions in Johannesburg during September?
September rainfall patterns in Johannesburg
UV exposure in Johannesburg during September
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