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Johannesburg weather in August

Weather in Johannesburg: August

Average day temperature: 68.8°F
Average night temperature: 53.8°F
Number of sunny days: 29 days
Day length: 10.9 - 11.6 hours
Number of rainy days: 0 days
Precipitation totals: 0.1 in.

Air temperature in August, °F

Show year:
2026
2025
2024

The highest day temperature during August of 2026 was 77°F. At the same time the lowest night temperature was 39°F. Daily and nightly averages during August were 66.8°F and 54.8°F.

Sunny, partly cloudy and cloudy days

Almost all days of August in Johannesburg are sunny. Cloudy days are rare.

Precipitation total in August, in.

Precipitation total value in Johannesburg in August is 0.1 in. Other months of the year show relatively similar values.

Wind speed in August, mph

The average wind speed value in August is 7.0 mph

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 August is: 10.2.

Best time for vacation in Johannesburg

Sunniest months:
July 30 days
May 29 days
August 29 days
Warmest months:
January 81.9 °F
February 81.0 °F
December 80.3 °F
Coldest months:
June 62.7 °F
July 62.9 °F
May 68.7 °F
Rainiest months:
January 6 days
December 6 days
February 5 days
Windiest months:
November 8.4 mph
October 8.2 mph
September 8.2 mph

Johannesburg on a weather map

Johannesburg
+82°F
NE 8 mph
Feels like: +79°F
Precip.: 0%
Places in South Africa:
Name
°F
+66°F
+82°F
+70°F
+88°F
+86°F
+73°F
24 Hours Forecast
Johannesburg
Local time: 19:03
October 29, thursday
2100
77°F
SE
4 mph
October 30, friday
0000
72°F
S
10 mph
0300
66°F
S
11 mph
0600
64°F
S
9 mph
0900
72°F
SE
7 mph
1200
82°F
SE
6 mph
1500
88°F
E
7 mph
1800
84°F
NE
6 mph
Units of measurement: °C / °F