Ga-Rankuwa, South Africa Climate
The warmest month is February, with an average high of 28°C; the coldest is July, with an average low of 5°C. A normal year brings 600 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Pretoria/Irene, since 1991. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 28
- Normal high
- 28°C
- Normal low
- 12°C
- Record high
- 32°Cin 2018
- Record low
- 5°Cin 2001
- Chance of a wet day
- 16%
- Daylight
- 12 h 16 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Record high | Record low | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 28°C | 16°C | 39°C (2016) | 8°C (2001) | 112 mm | 18.6 |
| February | 28°C | 16°C | 35°C (2016) | 11°C (2007) | 85 mm | 17.0 |
| March | 27°C | 15°C | 35°C (2024) | 6°C (2025) | 78 mm | 12.4 |
| April | 25°C | 12°C | 34°C (1995) | 0°C (2001) | 36 mm | 6.0 |
| May | 23°C | 8°C | 30°C (2024) | -1°C (2007) | 16 mm | 3.1 |
| June | 20°C | 5°C | 27°C (2010) | -2°C (2020) | 3 mm | 0.0 |
| July | 20°C | 5°C | 27°C (2002) | -4°C (2000) | 3 mm | 0.0 |
| August | 23°C | 7°C | 32°C (2020) | -5°C (2003) | 3 mm | 0.0 |
| September | 27°C | 11°C | 34°C (2018) | 0°C (2015) | 12 mm | 3.0 |
| October | 28°C | 13°C | 36°C (2024) | 0°C (1994) | 56 mm | 9.3 |
| November | 28°C | 15°C | 37°C (2015) | 4°C (2002) | 84 mm | 15.0 |
| December | 28°C | 16°C | 36°C (2015) | 6°C (1994) | 112 mm | 21.7 |
| Year | 26°C | 12°C | 600 mm | 106 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
600 mm in a normal year, most in January.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Ga-Rankuwa.
The muggiest month is January, when 3 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 14°C | 59% | 24% | 37% | 36% | 3% | 0% | 0% |
| February | 14°C | 59% | 26% | 41% | 32% | 1% | 0% | 0% |
| March | 13°C | 60% | 46% | 37% | 16% | 1% | 0% | 0% |
| April | 9°C | 57% | 86% | 12% | 2% | 0% | 0% | 0% |
| May | 4°C | 49% | 99% | 1% | 0% | 0% | 0% | 0% |
| June | 1°C | 49% | 100% | 0% | 0% | 0% | 0% | 0% |
| July | -1°C | 45% | 100% | 0% | 0% | 0% | 0% | 0% |
| August | 0°C | 39% | 100% | 0% | 0% | 0% | 0% | 0% |
| September | 2°C | 36% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | 7°C | 45% | 88% | 11% | 1% | 0% | 0% | 0% |
| November | 11°C | 52% | 58% | 33% | 9% | 0% | 0% | 0% |
| December | 14°C | 58% | 28% | 47% | 25% | 1% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is July, with the sky 18 percent covered on average; the cloudiest is December, at 65 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is October, averaging 13.7 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 19, with 13 h 45 min of daylight; the shortest is Jun 16, with 10 h 32 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Ga-Rankuwa in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
A record is the highest or lowest value on the date in every year the station has reported, back to 1991. It rests on one station, so a neighbor a few miles away can hold different ones.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Records: NOAA GHCN-Daily, station SFM00068263, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.