Johannesburg Weather in December
What's the weather like in Johannesburg (Gauteng) in December 2024?
The climate in Johannesburg during December can be summarized as warm and damp.
December is in the summer in Johannesburg and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 14°C (58°F) is normal.
| Daytime temperature | 25.9°C 78.5°F |
|---|---|
| Nightly temperature | 14.4°C 57.8°F |
| Average temperature | 20.1°C 68.2°F |
| Daily sunshine | 9.4 hrs |
| Avg rainfall | 113 mm 4.4 ins |
| Rainy days | 14 days |
| Sea temperature | 23.7°C 74.6°F |
| Humidity | 63% |
| Windspeed | 10.1kph 6 mph |
On average December is the 2nd wettest month of the year in Johannesburg with around 113mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
December temperatures in Johannesburg
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Johannesburg in December 2024.
Other monthly averages
Best places to visit in December
Johannesburg weather stats
| Hottest month: | January | 26.1°C 79°F |
|---|---|---|
| Driest month: | July | 4mm 0.2ins |
| Sunniest month: | July | 10hrs |
| Coldest month: | June | 16.4°C 61.5°F |
| Wettest month: | January | 135mm 5.3ins |
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