Climate averages 1991–2020
Welkom weather
in September.
A warm, very dry month: the 7th warmest and the 3rd 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 Welkom: daytime highs average 25.3°C and nights cool to about 9.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 14 mm of rain on roughly 3 days, which makes September a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 54 min on an average September day.
The nearest other city in this atlas is Odendaalsrus (12 km away). In September its highs average 25.6°C, about as warm as Welkom, with 14 mm of rain.
Among the 95 cities listed in South Africa, Welkom ranks joint 31st 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; Welkom is 1.0°C warmer than that mean.
From September to October, average highs rise by 2.0°C to 27.3°C, and monthly rainfall rises from 14 mm to 51 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
Welkom climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C17.0°C | 17.0°C | 92 | 13.1 | 13.714 h |
| February | 28.3°C16.5°C | 16.5°C | 75 | 11.5 | 13.113 h |
| March | 26.7°C14.7°C | 14.7°C | 67 | 10.3 | 12.312 h |
| April | 23.2°C10.8°C | 10.8°C | 46 | 6.8 | 11.411 h |
| May | 20.2°C6.3°C | 6.3°C | 19 | 3.2 | 10.811 h |
| June | 17.1°C2.7°C | 2.7°C | 12 | 1.8 | 10.410 h |
| July | 17.3°C2.2°C | 2.2°C | 6.3 | 1.0 | 10.511 h |
| August | 20.6°C4.8°C | 4.8°C | 15 | 2.0 | 11.111 h |
| September, selected | 25.3°C9.1°C | 9.1°C | 14 | 2.6 | 11.912 h |
| October | 27.3°C12.3°C | 12.3°C | 51 | 7.5 | 12.713 h |
| November | 28.1°C14.1°C | 14.1°C | 67 | 8.9 | 13.513 h |
| December | 29.1°C16.0°C | 16.0°C | 91 | 13.1 | 13.914 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
- Odendaalsrus in SeptemberSouth Africa · 12 kmHigh 25.6°C · Low 9.4°C · 14 mm rain
- Kutloanong in SeptemberSouth Africa · 16 kmHigh 25.7°C · Low 9.4°C · 14 mm rain
- Virginia in SeptemberSouth Africa · 19 kmHigh 25.7°C · Low 9.6°C · 14 mm rain
- Kroonstad in SeptemberSouth Africa · 61 kmHigh 25.3°C · Low 9.5°C · 14 mm rain
- Bothaville in SeptemberSouth Africa · 66 kmHigh 26.5°C · Low 10.0°C · 14 mm rain
- Orkney in SeptemberSouth Africa · 111 kmHigh 26.6°C · Low 10.1°C · 15 mm rain
- Klerksdorp in SeptemberSouth Africa · 125 kmHigh 26.6°C · Low 10.3°C · 14 mm rain
- Stilfontein in SeptemberSouth Africa · 126 kmHigh 26.4°C · Low 10.2°C · 14 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 Welkom) is explained once on the Welkom year overview and on the Sources, method and limits page.
Virginia lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.