Johannesburg weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: April – October
What is the weather like in Johannesburg in August?
In August, Johannesburg is mild: daytime highs average 20 °C, and nights cool down to about 5 °C. The sun shines for around 8 hours a day. It hardly ever rains. All in all, August is an excellent month for a holiday in Johannesburg.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 85 | 95 | 96 |
| Day | 16° | 20° | 24° |
| Night | 2° | 5° | 9° |
| Sun | 7 h | 8 h | 8 h |
| Rain days | 1 | 2 | 4 |
More details for August
- Daylight
- 11 h 10 min06:38 – 17:48
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 17 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+2Africa/Johannesburg
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %75 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Johannesburg in August: quick answers
Is Johannesburg hot in August?
No. In August, Johannesburg is mild: daytime highs average 20 °C and nights drop to about 5 °C.
Does it rain much in Johannesburg in August?
It hardly ever rains.
Johannesburg month by month
The whole year in JohannesburgAll destinations: South AfricaWhere to go in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences