Weather in Johannesburg, Gauteng, South Africa in December
In an average December, Johannesburg sees a daily high around 28°C and a low around 15°C, based on 1981–2026 of local climate records.
| Average high | 28°C |
|---|---|
| Typical high range | 23°C to 32°C |
| Average low | 15°C |
| Typical low range | 12°C to 17°C |
| Average daily precipitation | 5 mm |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
38°C
2024-12-13
Lowest
16°C
2019-12-05
Low
Highest
20°C
2020-12-28
Lowest
4°C
1998-12-04
Feels-like
Highest
42°C
2015-12-24
Lowest
-1°C
1998-12-04
Humidity
Highest
15.6 g/m³
1987-12-21
Lowest
3.5 g/m³
2018-12-04
Wind
Highest
42 km/h
1998-12-03
Lowest
7 km/h
2012-12-23
Precip
Wettest
202 mm
1995
Driest
43 mm
2003
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