Climate averages 1991–2020
Rustenburg weather
in May.
A warm, fairly dry month: the 10th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Rustenburg: daytime highs average 22.3°C and nights cool to about 9.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 17 mm of rain on roughly 2 days, which makes May a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 53 min on an average May day.
The nearest other city in this atlas is Brits (54 km away). In May its highs average 22.7°C, about as warm as Rustenburg, with 16 mm of rain.
Among the 95 cities listed in South Africa, Rustenburg ranks joint 22nd of 95 for the warmest May highs and joint 34th of 95 for the driest May (rainfall, lowest first). The mean May high of those 95 cities is 21.0°C; Rustenburg is 1.3°C warmer than that mean.
From May to June, average highs fall by 2.6°C to 19.7°C, and monthly rainfall falls from 17 mm to 7.2 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Brits in MaySouth Africa · 54 kmHigh 22.7°C · Low 9.5°C · 16 mm rain
- Krugersdorp in MaySouth Africa · 71 kmHigh 18.7°C · Low 6.0°C · 16 mm rain
- Randfontein in MaySouth Africa · 74 kmHigh 18.7°C · Low 6.5°C · 18 mm rain
- Ga-Rankuwa in MaySouth Africa · 76 kmHigh 22.0°C · Low 8.7°C · 16 mm rain
- Carletonville in MaySouth Africa · 79 kmHigh 19.9°C · Low 7.0°C · 18 mm rain
- Westonaria in MaySouth Africa · 83 kmHigh 19.5°C · Low 7.2°C · 18 mm rain
- Roodepoort in MaySouth Africa · 84 kmHigh 18.5°C · Low 6.0°C · 18 mm rain
- Soshanguve in MaySouth Africa · 89 kmHigh 22.5°C · Low 9.3°C · 16 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.