Weather in Johannesburg: May
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Average day temperature: | 68.9°F |
| Average night temperature: | 54.8°F | |
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Number of sunny days: | 29 days |
| Day length: | 10.6 - 11.1 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.3 in. | |
| more information | ||
14 days
forecast
forecast
| Johannesburg |
weather in
June
June
| Johannesburg |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 72°F. At the same time the lowest night temperature was 41°F. Daily and nightly averages during May were 65.9°F and 54.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Johannesburg in May is 0.4 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 5.1 mph It makes May lest windy month of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 9.8.
Best time for vacation in Johannesburg
Johannesburg on a weather map
Places in South Africa:
Name
°F
24 Hours Forecast
Johannesburg
Local time: 08:49
December 29, monday
0900
73°F
SW
2 mph
2 mph
1200
82°F
E
4 mph
4 mph
1500
84°F
N
5 mph
5 mph
1800
82°F
N
4 mph
4 mph
2100
75°F
S
4 mph
4 mph
December 30, tuesday
0000
68°F
SW
14 mph
14 mph
0300
64°F
S
11 mph
11 mph
0600
64°F
S
10 mph
10 mph
