Johannesburg
January
Weather in Johannesburg for January 2026
Your guide to Johannesburg weather in January - trends and predictions
So far, January 2026 in Johannesburg is slightly warmer than the historical average by 1.2 °C.
Expect cooler weather in the next days in Johannesburg with the forecast suggesting a temperature of 28.4 °C, lower than the historical average.
In general, the average temperature in Johannesburg at the beginning of January is 26.6 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 29.4 °C by the end of January.
Johannesburg experiences heavy rainfall in January, with over 20 rainy days and an average total precipitation 149.8 mm.
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Temperatures
Rain 🌧️
More
4
Dry days
27
Rainy days
0
Snow days
27°/16°
Temperatures
17 km/h
Avg max wind
57 %
Avg humidity
Johannesburg Weather January
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Temperatures trend during January in Johannesburg
See the weather trend as well as the moving average line
January weather in Johannesburg day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Jan. |  Heavy rain at times | 27° /16° | 13.8 mm | 9 | |
| 2 Jan. |  Patchy rain possible | 25° /15° | 7 mm | 8 | |
| 3 Jan. | Patchy rain possible | 28° /15° | 2 mm | 9 | |
| 4 Jan. | Patchy rain possible | 27° /15° | 5.4 mm | 8 | |
| 5 Jan. |  Moderate or heavy rain shower | 27° /15° | 7.9 mm | 10 | |
| 6 Jan. | Moderate or heavy rain shower | 26° /15° | 7.4 mm | 9 | |
| 7 Jan. | Patchy rain possible | 26° /16° | 10.5 mm | 9 | |
| 8 Jan. | Patchy rain possible | 26° /16° | 6.8 mm | 9 | |
| 9 Jan. | Patchy rain possible | 28° /16° | 2 mm | 10 | |
| 10 Jan. | Patchy rain possible | 28° /16° | 3.9 mm | 10 | |
| 11 Jan. | Patchy rain possible | 28° /16° | 9.4 mm | 10 | |
| 12 Jan. | Patchy rain possible | 27° /16° | 3.4 mm | 10 | |
| 13 Jan. | Moderate or heavy rain shower | 27° /16° | 7 mm | 10 | |
| 14 Jan. | Patchy rain possible | 28° /16° | 3.2 mm | 10 | |
| 15 Jan. | Patchy rain possible | 29° /16° | 2.1 mm | 9 | |
| 16 Jan. | Heavy rain at times | 27° /16° | 7 mm | 9 | |
| 17 Jan. | Patchy rain possible | 27° /16° | 7.8 mm | 9 | |
| 18 Jan. | Patchy rain possible | 26° /16° | 1.7 mm | 8 | |
| 19 Jan. | Patchy rain possible | 28° /15° | 2 mm | 9 | |
| 20 Jan. | Patchy rain possible | 29° /16° | 1.8 mm | 9 | |
| 21 Jan. |  Sunny | 30° /15° | 1.1 mm | 10 | |
| 22 Jan. | Sunny | 29° /15° | 0.4 mm | 11 | |
| 23 Jan. | Sunny | 30° /16° | 1 mm | 11 | |
| 24 Jan. | Sunny | 29° /16° | 1.9 mm | 10 | |
| 25 Jan. | Patchy rain possible | 29° /17° | 1.3 mm | 10 | |
| 26 Jan. | Patchy rain possible | 29° /16° | 2.2 mm | 10 | |
| 27 Jan. | Patchy rain possible | 29° /17° | 1.3 mm | 10 | |
| 28 Jan. | Moderate or heavy rain shower | 30° /17° | 5.8 mm | 10 | |
| 29 Jan. |  Moderate rain | 31° /16° | 17 mm | 2.7 | |
| 30 Jan. | Moderate rain | 29° /16° | 8.9 mm | 2.6 | |
| 31 Jan. | Moderate rain | 29° /15° | 10.5 mm | 2.9 | |
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Important Notice
Our weather forecast for Johannesburg in January 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 forecast closer to your planned date for the most up-to-date weather information.
Change Month
Johannesburg in January - FAQ
What are the expected maximum and minimum temperatures in Johannesburg during January?
During January, expect a variety of temperatures with highs around 27° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Johannesburg during January?
Significant rainfall exceeding 149.8 mm is expected in Johannesburg during January, occurring over more than 27 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Johannesburg during January?
The average wind speed in Johannesburg during January is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
January rainfall patterns in Johannesburg
Explore the daily rainfall trends and prepare for Johannesburgs January weather 💧
Typically, Johannesburg has 27 rainy days in January with a total of 149.8 mm of rainfall.
UV exposure in Johannesburg during January
Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️
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