Climate averages 1991–2020
Rustenburg weather
in September.
A warm, very dry month: the 6th warmest and the 4th 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 Rustenburg: daytime highs average 27.4°C and nights cool to about 12.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 14 mm of rain on roughly 2 days, which makes September a very dry month (the 4th 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 Brits (54 km away). In September its highs average 27.8°C, about as warm as Rustenburg, with 16 mm of rain.
Among the 95 cities listed in South Africa, Rustenburg ranks 7th of 95 for the warmest September highs and joint 10th of 95 for the driest September (rainfall, lowest first). The mean September high of those 95 cities is 24.3°C; Rustenburg is 3.2°C warmer than that mean.
From September to October, average highs rise by 1.4°C to 28.9°C, and monthly rainfall rises from 14 mm to 48 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
Rustenburg climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C18.4°C | 18.4°C | 94 | 14.2 | 13.514 h |
| February | 28.7°C18.2°C | 18.2°C | 90 | 11.9 | 13.013 h |
| March | 27.1°C16.6°C | 16.6°C | 70 | 10.4 | 12.312 h |
| April | 24.5°C13.2°C | 13.2°C | 33 | 5.8 | 11.512 h |
| May | 22.3°C9.2°C | 9.2°C | 17 | 2.2 | 10.911 h |
| June | 19.7°C6.0°C | 6.0°C | 7.2 | 1.3 | 10.611 h |
| July | 19.8°C5.5°C | 5.5°C | 2.9 | 0.6 | 10.711 h |
| August | 23.1°C8.4°C | 8.4°C | 6.6 | 1.2 | 11.211 h |
| September, selected | 27.4°C12.5°C | 12.5°C | 14 | 1.8 | 11.912 h |
| October | 28.9°C15.1°C | 15.1°C | 48 | 7.3 | 12.713 h |
| November | 28.7°C16.4°C | 16.4°C | 73 | 11.2 | 13.313 h |
| December | 28.7°C17.8°C | 17.8°C | 111 | 14.7 | 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
- Brits in SeptemberSouth Africa · 54 kmHigh 27.8°C · Low 12.7°C · 16 mm rain
- Krugersdorp in SeptemberSouth Africa · 71 kmHigh 23.7°C · Low 8.7°C · 19 mm rain
- Randfontein in SeptemberSouth Africa · 74 kmHigh 23.8°C · Low 9.0°C · 21 mm rain
- Ga-Rankuwa in SeptemberSouth Africa · 76 kmHigh 27.1°C · Low 11.8°C · 15 mm rain
- Carletonville in SeptemberSouth Africa · 79 kmHigh 25.1°C · Low 10.0°C · 20 mm rain
- Westonaria in SeptemberSouth Africa · 83 kmHigh 24.6°C · Low 9.7°C · 21 mm rain
- Roodepoort in SeptemberSouth Africa · 84 kmHigh 23.6°C · Low 8.5°C · 21 mm rain
- Soshanguve in SeptemberSouth Africa · 89 kmHigh 27.6°C · Low 12.5°C · 15 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 Rustenburg) is explained once on the Rustenburg year overview and on the Sources, method and limits page.