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Welkom weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Welkom?
For a warm holiday, the best week has been 27 February – 5 March (Weather Index 96). Favourable start dates for a 7-day trip run from 23 February to 13 March. January and December are warmest (30°C), June and July are driest and October to January have the most sun.
- Warmest
- January and December 30°C
- Coolest
- June and July 19°C
- Driest
- June and July 4% rain-day chance
- Wettest
- December 47% rain-day chance
- Sunniest
- October to 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 Welkom
Welkom 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 | 17.1 | 38.4 | 11.9 | 90.3 | 12.0 |
| February | 29.1 | 16.9 | 39.3 | 11.0 | 92.3 | 11.5 |
| March | 28.1 | 14.7 | 29.4 | 9.1 | 56.4 | 11.0 |
| April | 24.3 | 10.7 | 28.3 | 8.5 | 84.1 | 9.9 |
| May | 22.3 | 5.8 | 8.1 | 2.5 | 18.0 | 9.9 |
| June | 19.4 | 2.1 | 4.0 | 1.2 | 7.9 | 9.6 |
| July | 19.2 | 1.4 | 4.2 | 1.3 | 9.7 | 10.1 |
| August | 22.2 | 4.1 | 4.8 | 1.5 | 9.2 | 10.6 |
| September | 26.4 | 8.5 | 9.0 | 2.7 | 15.7 | 11.4 |
| October | 28.3 | 11.7 | 18.4 | 5.7 | 41.6 | 11.5 |
| November | 29.1 | 14.1 | 30.3 | 9.1 | 76.5 | 12.2 |
| December | 29.9 | 16.2 | 46.8 | 14.5 | 95.6 | 12.4 |
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.