Today’s Weather Forecast – 20-September-2025
As Gauteng welcomes a new day on the 20th of September, residents can expect a vivid reflection of the transitioning seasons, where the last remnants of winter meet the promising warmth of spring. Today’s weather forecast reveals a delightful blend of partly cloudy skies and sunlit hours, making for a pleasant day ahead. This detailed weather report covers major cities, expected temperatures, and significant weather alerts, providing the public with a comprehensive overview of the conditions today.
Gauteng Weather Breakdown:
Johannesburg
06:00: 14°C ⛅ Partly Cloudy
12:00: 26°C ☀️ Sunny
18:00: 18°C ☁️ Cloudy
Johannesburg will wake up to cool, partly cloudy conditions that warm into a sunny afternoon. Comfortable temperatures are expected throughout the day, making it perfect for outdoor activities.
Pretoria
06:00: 15°C ⛅ Partly Cloudy
12:00: 26°C ☀️ Sunny
18:00: 19°C ☁️ Cloudy
Pretoria’s early morning will mirror Johannesburg’s weather, transitioning to warm, sunny conditions in the afternoon, making it a great time for picnics in the park.
Soweto
06:00: 13°C ⛅ Partly Cloudy
12:00: 25°C ☀️ Sunny
18:00: 18°C ☁️ Cloudy
Soweto will see slightly cooler temperatures in the morning bursting into a beautifully sunny midday, followed by an evening with increasing cloud cover.
Benoni / Centurion / Germiston / Alberton
06:00: 14°C ⛅ Partly Cloudy
12:00: 24°C ☀️ Sunny
18:00: 18°C ☁️ Cloudy
These locations will share a very similar forecast with comfortable morning temps and sunny afternoons, creating perfect conditions for community activities and gatherings.
Vanderbijlpark / Krugersdorp / Midrand
06:00: 15°C ⛅ Partly Cloudy
12:00: 25°C ☀️ Sunny
18:00: 19°C ☁️ Cloudy
These towns are set for optimal afternoon warmth and a gentle transition into a cloud-enriched evening.
Mabopane / Eersterus / Winterveld
06:00: 14°C ⛅ Partly Cloudy
12:00: 24°C ☀️ Sunny
18:00: 18°C ☁️ Cloudy
Residents can expect clear skies this midday to enjoy a well-deserved outdoor break, while evening cloud cover will bring a more serene ambiance.
Weather Alerts and Conditions:
No severe weather alerts are in place for Gauteng today; however, residents should stay informed about localized weather changes, especially in the afternoon when brief isolated showers could occur. The UV index will be high during midday, so protecting oneself from sun exposure is crucial.
Tips for the Day Ahead:
- Mornings: Enjoy the cool temperatures by dressing in layers. Bringing along a light jacket could enhance comfort during the morning chill.
- Noon: During the peak sun exposure hours, take care to wear sunscreen and protective accessories like hats and sunglasses to avoid sunburn. Staying hydrated should be a priority as the temperatures peak.
- Evening: A light sweater or jacket might be ideal for transitioning into a cooler night, especially as cloud cover comes into play.
Detailed Weather Forecast for South Africa on 20 September 2025
Below is a detailed weather forecast for South Africa on Saturday, 20 September 2025, structured with tables for Gauteng Province hourly and provincial forecasts with key cities. The temperatures (in °C) and weather icons are based on the most recent available forecasts, local weather alerts, and typical climatic patterns for the date, supplemented by authoritative sources including the South African Weather Service.
1. Gauteng Province Hourly Forecast (20 Sep 2025)
| Location | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|
| Johannesburg | 14°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy | 22°C ☀️ Sunny | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Pretoria | 13°C ⛅ Partly Cloudy | 19°C ☀️ Sunny | 23°C ☀️ Sunny | 25°C ☀️ Sunny | 21°C ⛅ Partly Cloudy | 18°C ☁️ Cloudy |
| Soweto | 14°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy | 22°C ☀️ Sunny | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Benoni | 13°C ⛅ Partly Cloudy | 18°C ☀️ Sunny | 22°C ☀️ Sunny | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Centurion | 13°C ⛅ Partly Cloudy | 19°C ☀️ Sunny | 23°C ☀️ Sunny | 25°C ☀️ Sunny | 21°C ⛅ Partly Cloudy | 18°C ☁️ Cloudy |
| Midrand | 14°C ⛅ Partly Cloudy | 19°C ☀️ Sunny | 23°C ⛅ Partly Cloudy | 25°C ☀️ Sunny | 21°C ⛅ Partly Cloudy | 18°C ☁️ Cloudy |
| Alberton | 13°C ⛅ Partly Cloudy | 18°C ☀️ Sunny | 22°C ☀️ Sunny | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Germiston | 13°C ⛅ Partly Cloudy | 18°C ☀️ Sunny | 22°C ⛅ Partly Cloudy | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Vanderbijlpark | 12°C ⛅ Partly Cloudy | 18°C ☀️ Sunny | 22°C ⛅ Partly Cloudy | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Krugersdorp | 13°C ⛅ Partly Cloudy | 18°C ☀️ Sunny | 22°C ⛅ Partly Cloudy | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
Gauteng will have partly cloudy to sunny conditions with temperatures rising steadily during the day. Some isolated showers or thundershowers may be possible but mostly dry.
2. Provincial Forecast Breakdown (20 Sep 2025)
Western Cape
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Cape Town | 15°C ⛅ Partly Cloudy | 20°C ⛅ Partly Cloudy | 17°C ☁️ Cloudy |
| Stellenbosch | 14°C ⛅ Partly Cloudy | 20°C ⛅ Partly Cloudy | 16°C ☁️ Cloudy |
| George | 13°C ⛅ Partly Cloudy | 19°C ☀️ Sunny | 15°C ⛅ Partly Cloudy |
KwaZulu-Natal
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Durban | 18°C 🌫️ Morning Fog | 24°C ⛅ Partly Cloudy | 21°C ⛅ Partly Cloudy |
| Pietermaritzburg | 16°C 🌫️ Morning Fog | 22°C ⛅ Partly Cloudy | 19°C ⛅ Partly Cloudy |
| Richards Bay | 17°C 🌫️ Morning Fog | 23°C ⛅ Partly Cloudy | 20°C ⛅ Partly Cloudy |
Eastern Cape
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Port Elizabeth | 14°C ⛅ Partly Cloudy | 21°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy |
| East London | 14°C ⛅ Partly Cloudy | 22°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy |
| Mthatha | 13°C ⛅ Partly Cloudy | 20°C ⛅ Partly Cloudy | 17°C ⛅ Partly Cloudy |
Free State
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Bloemfontein | 11°C ⛅ Partly Cloudy | 22°C ☀️ Sunny | 18°C ⛅ Partly Cloudy |
| Welkom | 12°C ⛅ Partly Cloudy | 23°C ☀️ Sunny | 19°C ⛅ Partly Cloudy |
| Bethlehem | 11°C ⛅ Partly Cloudy | 22°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy |
Limpopo
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Polokwane | 12°C 🌫️ Morning Fog | 23°C ⛅ Partly Cloudy | 19°C ⛅ Partly Cloudy |
| Thohoyandou | 13°C 🌫️ Morning Fog | 24°C ⛅ Partly Cloudy | 20°C ⛅ Partly Cloudy |
| Lephalale | 12°C ⛅ Partly Cloudy | 23°C ⛅ Partly Cloudy | 19°C ⛅ Partly Cloudy |
Mpumalanga
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Mbombela | 13°C 🌫️ Morning Fog | 23°C ⛅ Partly Cloudy | 19°C ⛅ Partly Cloudy |
| Secunda | 12°C ⛅ Partly Cloudy | 22°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy |
| Emalahleni | 12°C ⛅ Partly Cloudy | 22°C ⛅ Partly Cloudy | 18°C ⛅ Partly Cloudy |
North West
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Mahikeng | 14°C ⛅ Partly Cloudy | 25°C ☀️ Sunny | 20°C ⛅ Partly Cloudy |
| Rustenburg | 13°C ⛅ Partly Cloudy | 24°C ☀️ Sunny | 20°C ⛅ Partly Cloudy |
| Klerksdorp | 13°C ⛅ Partly Cloudy | 24°C ☀️ Sunny | 19°C ⛅ Partly Cloudy |
Northern Cape
| Location | 06:00 | 12:00 | 18:00 |
|---|---|---|---|
| Kimberley | 11°C 🌫️ Morning Fog | 26°C ☀️ Sunny | 21°C ⛅ Partly Cloudy |
| Upington | 14°C ⛅ Partly Cloudy | 29°C ☀️ Sunny | 24°C ⛅ Partly Cloudy |
| Springbok | 10°C 🌫️ Morning Fog | 23°C ☀️ Sunny | 18°C ⛅ Partly Cloudy |
Additional Notes
Winds & Fire Danger: Strong winds are forecasted in some coastal and central areas with extreme fire danger warnings especially in parts of Northern Cape, Western Cape, and Eastern Cape.
Rainfall: Isolated to scattered showers and thunderstorms are likely in central and eastern regions, including parts of Gauteng, Limpopo, and KwaZulu-Natal. However, most areas will predominantly see partly cloudy to sunny conditions.
UV Index: High UV levels across many regions; sun protection is advised.
Temperatures generally range from lows around 10-15°C in the early morning to daytime highs from about 20°C in Western Cape to warmer 25-29°C in northern and inland areas.
Conclusion
In summarizing today’s Gauteng weather, it is clear that outdoor activities can be well enjoyed with minimal weather interruptions. With comfortable temperatures, mostly sunny skies, and no severe alerts, residents can embrace the changing season. As we step into the heart of spring, remember to relish in the warmth and beauty of Gauteng’s vibrant landscapes while taking necessary precautions against the sun’s strong rays. Enjoy the day ahead!
For more details on the weather, visit the South African Weather Service or follow updates on Twitter.
