Climate averages 1991–2020
Welkom weather
in December.
A hot, wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Welkom: daytime highs average 29.1°C and nights cool to about 16.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 91 mm of rain on roughly 13 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 53 min on an average December day.
The nearest other city in this atlas is Odendaalsrus (12 km away). In December its highs average 29.3°C, about as warm as Welkom, with 94 mm of rain.
Among the 95 cities listed in South Africa, Welkom ranks joint 11th of 95 for the warmest December highs and joint 26th of 95 for the driest December (rainfall, lowest first). The mean December high of those 95 cities is 26.6°C; Welkom is 2.5°C warmer than that mean.
From December to January, average highs rise by 0.1°C to 29.2°C, and monthly rainfall rises from 91 mm to 92 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Odendaalsrus in DecemberSouth Africa · 12 kmHigh 29.3°C · Low 16.3°C · 94 mm rain
- Kutloanong in DecemberSouth Africa · 16 kmHigh 29.4°C · Low 16.3°C · 94 mm rain
- Virginia in DecemberSouth Africa · 19 kmHigh 29.4°C · Low 16.4°C · 91 mm rain
- Kroonstad in DecemberSouth Africa · 61 kmHigh 28.4°C · Low 15.8°C · 104 mm rain
- Bothaville in DecemberSouth Africa · 66 kmHigh 29.7°C · Low 16.7°C · 89 mm rain
- Orkney in DecemberSouth Africa · 111 kmHigh 29.1°C · Low 16.6°C · 98 mm rain
- Klerksdorp in DecemberSouth Africa · 125 kmHigh 29.0°C · Low 16.7°C · 102 mm rain
- Stilfontein in DecemberSouth Africa · 126 kmHigh 28.7°C · Low 16.5°C · 102 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.