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Rustenburg weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Rustenburg?
For a warm holiday, the best week has been 11–17 September (Weather Index 98). Favourable start dates for a 7-day trip run from 3 September to 24 September. October to January are warmest (30°C), August is driest and January has the most sun.
- Warmest
- October to January 30°C
- Coolest
- June and July 22°C
- Driest
- August 1% rain-day chance
- Wettest
- December 48% rain-day chance
- Sunniest
- January 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Rustenburg
Rustenburg historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 30.1 | 19.2 | 43.5 | 13.5 | 107.5 | 11.5 |
| February | 29.4 | 18.9 | 45.4 | 12.7 | 109.2 | 11.0 |
| March | 28.8 | 17.1 | 27.7 | 8.6 | 53.0 | 10.8 |
| April | 25.7 | 13.7 | 23.3 | 7.0 | 60.3 | 9.9 |
| May | 24.0 | 9.4 | 6.8 | 2.1 | 17.6 | 10.0 |
| June | 21.6 | 6.3 | 3.0 | 0.9 | 4.5 | 9.9 |
| July | 21.5 | 6.1 | 3.2 | 1.0 | 6.2 | 10.2 |
| August | 25.0 | 9.2 | 1.3 | 0.4 | 1.2 | 10.7 |
| September | 28.9 | 13.2 | 5.3 | 1.6 | 5.8 | 11.4 |
| October | 29.9 | 15.6 | 19.0 | 5.9 | 40.2 | 11.2 |
| November | 29.8 | 17.1 | 35.3 | 10.6 | 67.0 | 11.3 |
| December | 29.6 | 18.5 | 48.4 | 15.0 | 119.5 | 11.2 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.