Weather in Johannesburg in May
In an average May, Johannesburg sees a daily high around 21°C and a low around 7°C, based on 1980–2026 of local climate records.
| Average high | 21°C |
|---|---|
| Typical high range | 17°C to 24°C |
| Average low | 7°C |
| Typical low range | 4°C to 10°C |
| Average daily precipitation | 0 mm |
May records
The most extreme May on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
28°C
2012-05-05
Lowest
6°C
1997-05-28
Low
Highest
15°C
2012-05-01
Lowest
-3°C
2007-05-25
Feels-like
Highest
27°C
2012-05-05
Lowest
-8°C
2007-05-22
Humidity
Highest
11.9 g/m³
2010-05-09
Lowest
2.3 g/m³
2007-05-25
Wind
Highest
36 km/h
2003-05-11
Lowest
5 km/h
1991-05-17
Gust
Highest
79 km/h
1983-05-20
Lowest
13 km/h
2025-05-15
Precip
Wettest
97 mm
1997
Driest
0 mm
2020
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