Climate averages 1991–2020
Midrand weather
in December.
A warm, wet month: the 4th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Midrand: daytime highs average 25.2°C and nights cool to about 14.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 117 mm of rain on roughly 16 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 44 min on an average December day.
The nearest other city in this atlas is Thembisa (11 km away). In December its highs average 25.5°C, about as warm as Midrand, with 116 mm of rain.
Among the 95 cities listed in South Africa, Midrand ranks joint 67th of 95 for the warmest December highs and joint 56th of 95 for the driest December (rainfall, lowest first). The mean December high of those 95 cities is 26.6°C; Midrand is 1.4°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 25.4°C, and monthly rainfall falls from 117 mm to 108 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
Midrand climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.4°C15.1°C | 15.1°C | 108 | 15.0 | 13.614 h |
| February | 25.3°C14.9°C | 14.9°C | 97 | 12.4 | 13.013 h |
| March | 24.0°C13.4°C | 13.4°C | 80 | 11.1 | 12.312 h |
| April | 21.6°C10.3°C | 10.3°C | 37 | 6.4 | 11.511 h |
| May | 19.5°C6.7°C | 6.7°C | 14 | 2.5 | 10.911 h |
| June | 17.1°C3.7°C | 3.7°C | 6.5 | 1.1 | 10.511 h |
| July | 17.3°C3.1°C | 3.1°C | 2.5 | 0.6 | 10.711 h |
| August | 20.4°C5.6°C | 5.6°C | 7.5 | 1.4 | 11.211 h |
| September | 24.4°C9.4°C | 9.4°C | 19 | 2.8 | 11.912 h |
| October | 25.4°C11.8°C | 11.8°C | 61 | 9.3 | 12.713 h |
| November | 25.0°C13.2°C | 13.2°C | 85 | 12.5 | 13.413 h |
| December, selected | 25.2°C14.6°C | 14.6°C | 117 | 16.4 | 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
December in nearby cities
- Thembisa in DecemberSouth Africa · 11 kmHigh 25.5°C · Low 15.0°C · 116 mm rain
- Centurion in DecemberSouth Africa · 15 kmHigh 26.5°C · Low 16.0°C · 113 mm rain
- Randburg in DecemberSouth Africa · 18 kmHigh 25.4°C · Low 14.8°C · 117 mm rain
- Johannesburg in DecemberSouth Africa · 26 kmHigh 24.3°C · Low 13.7°C · 138 mm rain
- Pretoria in DecemberSouth Africa · 27 kmHigh 27.3°C · Low 16.6°C · 113 mm rain
- Germiston in DecemberSouth Africa · 27 kmHigh 25.1°C · Low 14.6°C · 130 mm rain
- Benoni in DecemberSouth Africa · 31 kmHigh 25.0°C · Low 14.5°C · 130 mm rain
- Roodepoort in DecemberSouth Africa · 32 kmHigh 24.4°C · Low 13.9°C · 141 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 Midrand) is explained once on the Midrand year overview and on the Sources, method and limits page.
Randburg lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.