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United StatesThe weather in August in Johannesburg
It's hot in August in Johannesburg with an average temperature of 39°C. Temperatures this month range from a low of 38°C to a high of 41°C. At night, you can expect temperatures between 20°C and 24°C.
August isn’t a good month to be in Johannesburg. The average temperature of 39°C this month is uncomfortably hot for a comfortable stay.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Johannesburg, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 45°C in 2020, Johannesburg reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 24°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 29°C.
Rainfall amount
In August, there is an average of 10 mm of precipitation, spread over 2 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Daily weather in August for Johannesburg
Click on any day in August to get detailed info about the usual weather on that day in Johannesburg. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Johannesburg | New York | |
|---|---|---|
| Average temperature | 39°C | 30°C |
| Max. temperature | 41°C | 31°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 10 mm | 79 mm |
| Rainy days | 2 days | 13 days |
Start of August
The month of August starts in Johannesburg with hot temps, averaging around 39°C during the day and nights around 22°C.
Mid August
By mid-August, daytime temps rise to around 40°C, with nights around 22°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of August
By the end of August, the average daytime temperature in Johannesburg is around 39°C, while nighttime temps are about 21°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
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Temperature charts
These charts show the average temperatures in August in Johannesburg, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Johannesburg
Temperature in August in Johannesburg over the years
Precipitation charts
These charts show the average amount of precipitation in August in Johannesburg, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Johannesburg
Total precipitation in August in Johannesburg over the years
Daily UV index in August in Johannesburg
This chart shows the average daily UV index in August in Johannesburg, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in Johannesburg
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Average weather in Johannesburg by month
Click on a month below to see detailed weather info for Johannesburg. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.