Johannesburg South
December
Weather in Johannesburg South for December 2025
Your guide to Johannesburg South weather in December - trends and predictions
Until now, December 2025 in Johannesburg South is cooler than usual, with temperatures averaging 26.1 °C, this is -3.4 °C below the typical seasonal average.
The forecast for the next days in Johannesburg South predicts a temperature of 24.1 °C, which is cooler than the historical average.
In general, the average temperature in Johannesburg South at the beginning of December is 30.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.3 °C by the end of December.
Johannesburg South experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 140.8 mm.
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Temperatures
Rain 🌧️
More
6
Dry days
25
Rainy days
0
Snow days
28°/17°
Temperatures
20 km/h
Avg max wind
52 %
Avg humidity
Johannesburg South Weather December
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Temperatures trend during December in Johannesburg South
See the weather trend as well as the moving average line
December weather in Johannesburg South day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | 28° /15° | 1.6 mm | 10 | |
| 2 Dec. | Sunny | 31° /16° | 4.6 mm | 10 | |
| 3 Dec. | Sunny | 31° /17° | 1.4 mm | 10 | |
| 4 Dec. |  Partly cloudy | 31° /18° | 0.6 mm | 10 | |
| 5 Dec. |  Cloudy | 30° /18° | 3.1 mm | 10 | |
| 6 Dec. |  Patchy light drizzle | 31° /18° | 1.6 mm | 10 | |
| 7 Dec. |  Patchy rain possible | 29° /18° | 3.7 mm | 10 | |
| 8 Dec. | Patchy rain possible | 30° /16° | 1.3 mm | 10 | |
| 9 Dec. | Patchy rain possible | 31° /18° | 1.9 mm | 10 | |
| 10 Dec. | Light rain shower | 27° /15° | 6.7 mm | 9 | |
| 11 Dec. | Patchy rain possible | 27° /16° | 7.2 mm | 9 | |
| 12 Dec. | Sunny | 29° /16° | 0.6 mm | 10 | |
| 13 Dec. | Patchy rain possible | 28° /17° | 2.6 mm | 9 | |
| 14 Dec. | Cloudy | 30° /16° | 3.2 mm | 10 | |
| 15 Dec. | Patchy rain possible | 25° /15° | 0.2 mm | 2.3 | |
| 16 Dec. | Patchy rain possible | 25° /17° | 1.2 mm | 2.3 | |
| 17 Dec. | Patchy rain possible | 26° /17° | 2 mm | 2.7 | |
| 18 Dec. |  Moderate rain | 23° /15° | 15.7 mm | 2.7 | |
| 19 Dec. | Patchy rain possible | 24° /15° | 1.3 mm | 3.6 | |
| 20 Dec. | Moderate rain | 26° /16° | 5.7 mm | 7 | |
| 21 Dec. | Moderate rain | 26° /15° | 7.3 mm | 7 | |
| 22 Dec. | Patchy rain possible | 23° /16° | 2 mm | 7 | |
| 23 Dec. | Patchy rain possible | 25° /15° | 2.5 mm | 7 | |
| 24 Dec. | Patchy rain possible | 22° /16° | 1.9 mm | 7 | |
| 25 Dec. | Patchy rain possible | 19° /15° | 3.3 mm | 7 | |
| 26 Dec. | Patchy rain possible | 24° /16° | 0.7 mm | 7 | |
| 27 Dec. | Patchy rain possible | 25° /16° | 3.5 mm | 7 | |
| 28 Dec. | Patchy rain possible | 24° /16° | 3.7 mm | 7 | |
| 29 Dec. | Light rain shower | 24° /15° | 6.1 mm | 9 | |
| 30 Dec. | Sunny | 27° /15° | 0.7 mm | 10 | |
| 31 Dec. | Patchy rain possible | 27° /17° | 8.4 mm | 9 | |
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Important Notice
Our weather forecast for Johannesburg South in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Johannesburg South forecast closer to your planned date for the most up-to-date weather information.
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Johannesburg South in December - FAQ
What are the expected maximum and minimum temperatures in Johannesburg South during December?
During December, expect a variety of temperatures with highs around 28° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Johannesburg South during December?
Significant rainfall exceeding 140.8 mm is expected in Johannesburg South during December, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Johannesburg South during December?
The average wind speed in Johannesburg South during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Johannesburg South
Explore the daily rainfall trends and prepare for Johannesburg Souths December weather 💧
Typically, Johannesburg South has 25 rainy days in December with a total of 140.8 mm of rainfall.
UV exposure in Johannesburg South during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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