Johannesburg in december: average Weather, Temperature and Climate
Weather in Johannesburg in december 2026
The weather in Johannesburg in december comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
good weather UV index: 6
Weather at 6am
70°F
Clear/Sunny
50% of time
21%
18%
7%
Weather at 12pm
83°F
Clear/Sunny
48% of time
27%
12%
8%
Weather at 6pm
74°F
Clear/Sunny
48% of time
31%
9%
9%
Weather at 3am
63°F
44%
19%
17%
11%
Evolution of daily average temperature and precipitation in Johannesburg in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Johannesburg in december.
The climate of Johannesburg in december is good
the weather in Johannesburg in december is wet (with 6.2in of precipitation over 10 days). It should be noted a worsening from the previous month since in november there is an average of 5.3in of precipitation over 8 days.
The climate quite comfortable around this city the month of december. The high seasonal norm is 83°F. In the morning the temperature drops to 70°F. Thus, the mean temperature average in december in Johannesburg is 77°F. Note that seasonal normals are in contrast with those observed in Johannesburg in december with a maximum record of 99°F in 2018 and a minimum record of 52°F in 2019. You can hope to have about 11 days with temperatures over 86°F, or 35 of time.
In december in Johannesburg, the days on average last 13:46. Sunrise is at 05:10 and sets at 18:56.
With proper weather, december is okay (but not good) to go in this locality.
Seasonal average climate and temperature of Johannesburg in december
Check below seasonal norms These datas are compiled from the weather statements of the last years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 77°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 70°F | ||||
| Highest record temperature | 99°F (2018) | ||||
| Lowest record temperature | 52°F (2019) | ||||
| Number of days at +86°F | 11 day(s) (35%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 70°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 6.2in | ||||
| Number of days with rainfall | 10 day(s) (31%) | ||||
| Record daily rainfall | 2.6in (2020) | ||||
| Other climate data | |||||
| Humidity | 66% | ||||
| Visibility | 9.3km | ||||
| Cloud cover | 26% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:10 | ||||
| Time of sunset | 18:56 | ||||
| Length of day | 13:46 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last december?
Here is the day by day recorded weather in Johannesburg in december 2025:
59°F to 74°F
59°F to 79°F
59°F to 81°F
59°F to 76°F
59°F to 77°F
67°F to 83°F
68°F to 83°F
61°F to 81°F
67°F to 85°F
68°F to 83°F
61°F to 79°F
61°F to 81°F
65°F to 70°F
61°F to 65°F
59°F to 79°F
63°F to 77°F
67°F to 81°F
63°F to 72°F
61°F to 74°F
65°F to 77°F
63°F to 77°F
61°F to 74°F
59°F to 79°F
65°F to 85°F
61°F to 77°F
65°F to 81°F
65°F to 83°F
63°F to 74°F
61°F to 83°F
65°F to 76°F
63°F to 85°F
Map: other cities in South Africa in december
Cities near Johannesburg:
| Soweto in december | good weather |
| Pretoria in december | good weather |
| Rustenburg in december | good weather |
| Potchefstroom in december | good weather |
| Standerton in december | good weather |
| Pilanesberg National Park in december | good weather |
| Modimolle in december | good weather |
| Thabazimbi in december | good weather |
| Ermelo in december | good weather |
| Marakele National Park in december | good weather |
| Welkom in december | good weather |
| Madikwe Game Reserve in december | good weather |
Click over cities on the map for information about the weather in december.
Johannesburg
perfect weather
good
tolerable
bad
very bad
Weather data for Johannesburg in december:
Weather data for Johannesburg for december are derived from an average of the weather forecast since 2009 in Johannesburg. There is a margin of error and these forecasts are to be considered as general information only. The weather in Johannesburg can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Johannesburg.