August weather forecast and climate
Johannesburg, South Africa

The vast cityscape of Gauteng Province in Johannesburg, South Africa
The vast cityscape of Gauteng Province in Johannesburg, South Africa
August in Johannesburg sees a slight rise in temperature to 7°C (44.6°F) at its lowest and 20°C (68°F) at its highest points respectively.
Winter comes to an end in the next few weeks, and as such, the rains begin to return. In August, the total average number of rainy days is two, and the rainfall that rains during the month collect at an average of 10.2mm (0.4").
The sunshine hours during the month rise to an average of eleven per day, making it even warmer. The mornings might be chilly, but the evenings are mildly warm and more relaxed.

What is the temperature in August in Johannesburg?

In August, in Johannesburg, South Africa, the average high-temperature is 19.4°C (66.9°F), and the average low-temperature is 6.2°C (43.2°F).

How much does it rain in Johannesburg in August?

In Johannesburg, South Africa, in August, it is raining for 2.1 days, with typically 6mm (0.2") of accumulated precipitation.
Average temperature in August - Johannesburg, South Africa
  • Average high temperature in August: 19.4°C

The warmest month (with the highest average high temperature) is January (25.6°C).
The month with the lowest average high temperature is June (16°C).

  • Average low temperature in August: 6.2°C

The month with the highest average low temperature is January (14.7°C).
Coldest months (with the lowest average low temperature) are June and July (4.1°C).

Average humidity in August - Johannesburg, South Africa
  • Average humidity in August: 46%

The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (46%).

Average rainfall in August - Johannesburg, South Africa
  • Average rainfall in August: 6mm

The wettest month (with the highest rainfall) is January (125mm).
The driest month (with the lowest rainfall) is July (4mm).

Average rainfall days in August - Johannesburg, South Africa
  • Average rainfall days in August: 2.1 days

The month with the highest number of rainy days is January (15.9 days).
The month with the lowest number of rainy days is July (1 days).

Average daylight in August / Average sunshine in August - Johannesburg, South Africa
  • Average daylight in August: 11.2h

The month with the longest days is December (Average daylight: 13.8h).
The month with shortest days is June (Average daylight: 10.5h).

  • Average sunshine in August: 9.2h

The month with most sunshine is September (Average sunshine: 9.4h).
The month with least sunshine is March (Average sunshine: 7.7h).

Average UV index in August - Johannesburg, South Africa
  • Average UV index in August: 7

Months with the highest UV index are January, February, March, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 5).

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