Climate averages 1991–2020
Roodepoort weather
in September.
A warm, fairly dry month: the 6th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Roodepoort: daytime highs average 23.6°C and nights cool to about 8.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 21 mm of rain on roughly 3 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average September day.
The nearest other city in this atlas is Soweto (12 km away). In September its highs average 24.2°C, 0.5°C warmer than Roodepoort, with 21 mm of rain.
Among the 95 cities listed in South Africa, Roodepoort ranks joint 66th of 95 for the warmest September highs and joint 43rd of 95 for the driest September (rainfall, lowest first). The mean September high of those 95 cities is 24.3°C; Roodepoort is 0.6°C cooler than that mean.
From September to October, average highs rise by 1.0°C to 24.6°C, and monthly rainfall rises from 21 mm to 73 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Roodepoort climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.5°C14.3°C | 14.3°C | 132 | 16.9 | 13.614 h |
| February | 24.3°C14.0°C | 14.0°C | 118 | 14.4 | 13.013 h |
| March | 23.0°C12.5°C | 12.5°C | 90 | 12.8 | 12.312 h |
| April | 20.6°C9.5°C | 9.5°C | 45 | 7.3 | 11.511 h |
| May | 18.5°C6.0°C | 6.0°C | 18 | 3.1 | 10.911 h |
| June | 16.3°C3.0°C | 3.0°C | 8.1 | 1.4 | 10.511 h |
| July | 16.4°C2.3°C | 2.3°C | 3.2 | 0.8 | 10.711 h |
| August | 19.6°C4.9°C | 4.9°C | 9.7 | 1.9 | 11.211 h |
| September, selected | 23.6°C8.5°C | 8.5°C | 21 | 3.4 | 11.912 h |
| October | 24.6°C11.0°C | 11.0°C | 73 | 10.4 | 12.713 h |
| November | 24.3°C12.4°C | 12.4°C | 99 | 13.9 | 13.413 h |
| December | 24.4°C13.9°C | 13.9°C | 141 | 18.4 | 13.714 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Soweto in SeptemberSouth Africa · 12 kmHigh 24.2°C · Low 9.3°C · 21 mm rain
- Krugersdorp in SeptemberSouth Africa · 13 kmHigh 23.7°C · Low 8.7°C · 19 mm rain
- Randburg in SeptemberSouth Africa · 15 kmHigh 24.6°C · Low 9.5°C · 19 mm rain
- Randfontein in SeptemberSouth Africa · 17 kmHigh 23.8°C · Low 9.0°C · 21 mm rain
- Johannesburg in SeptemberSouth Africa · 18 kmHigh 23.4°C · Low 8.5°C · 22 mm rain
- Alberton in SeptemberSouth Africa · 28 kmHigh 24.7°C · Low 9.5°C · 22 mm rain
- Westonaria in SeptemberSouth Africa · 28 kmHigh 24.6°C · Low 9.7°C · 21 mm rain
- Germiston in SeptemberSouth Africa · 30 kmHigh 24.5°C · Low 9.3°C · 23 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Roodepoort) is explained once on the Roodepoort year overview and on the Sources, method and limits page.
Soweto, Westonaria and Randfontein lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.